Bot Block

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This topic is part of the manual Designer User's Guide for version Current of Routing.

Use the Bot block to add a chatbot to your application.

Add a Bot block to the Self Service phase of your application when you want to use a bot resource in your application. If you add a bot to a default type application that is enabled for omni-channel, the same bot resource can service both voice and chat customers.

Bots are software applications that apply automatic speech recognition and natural language understanding to listen and respond to customers in a way that resembles a conversation with a live agent. They can determine what a customer wants to do and then collect the information required to fulfill the request.

For example, they can help a customer set up a reservation:

Chat demo.gif

Designer bot resources are managed from the Bot Registry, where you can add and manage bot resources from your bot services provider (for a list of supported providers and details about adding bot resources to Designer, see the Bot Registry page). You can use multiple bots in an application, from any of the supported bot services providers.

Using this block

From the User Interaction section of the palette, drag and drop a Bot block to the Self Service phase of your application. After you have set up the block, you can then customize the application logic to specify additional handling, such as call a Shared Module for managing a specific type of intent or send the customer to a live agent for more assistance.

Watch: Use bots in applications

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Intents and Slots tab

Use the settings in the Configure Bot details section to select the provider and name of the bot resource you want to use.

Designer then automatically populates the block properties with Intents and Slots for the bot resource you've selected. For each Intent, Designer automatically creates an associated Bot Option "child" block (similar to how the Menu block creates blocks for each menu option).

In the Intents and Slots assignment section, you can select the variable that holds the Intent (what does the customer want to do?) and values for the Slots. The Slots (or entities) help provide additional context to the intent.

For example, let's say our selected bot resource has an Intent called BookCar. The bot detects that the customer wants to rent a car, but it also needs to know other details about the customer's request, such as the type of car they want, where they are picking it up, and when they plan to return it. The Slots are used to guide the bot as to the questions it needs to ask the customer (using natural-language) so it can collect this type of information.

Des bot intents slots.png

When the slots have been filled, the customer's intent can then be fulfilled through Designer. For example, once the slot for the ReturnDate is filled with input from the customer, the Designer application can then use that information to reserve the requested vehicle.

Input Settings tab

If you are setting up a DialogFlow bot, you can select Use Streaming Audio to have Designer stream the audio inputs directly to the bot services provider. This enables the bot provider to handle the transcribing of audio inputs and assigning them to the appropriate intents and slots, which can improve the performance of these types of bots.

The Beep before listening for input option plays a "beep" tone after the bot asks the customer for input. When enabled, the Bot block only recognizes the input that is received from the customer after the beep has played.

You can also use this tab to adjust the Input timeout values for both voice and chat inputs. These settings tell Designer how long to wait (in seconds) before assuming that the customer did not provide any input to the bot.

Des bot input settings 3.png

Retry tab

If a bot doesn't understand a response from a customer, it asks the customer to try again until it understands the input being provided.

The retry settings on the Bot block work a bit differently than the retry settings on other blocks, such as Menu and User Input, in that you specify how the Bot block will respond to input that isn't recognized on a conversational level, for each of the question and response exchanges that take place between the bot service and the customer.

Use application-wide retry

Select this option if you want to use the retry settings that are specified on the Global Retry tab in the Application Settings.

Des bot retry use app.png

Allow retries

Select this option to specify specify retry rules for this block. When enabled, you can set the following options:

Number of No Input retries allowed

Select the number of retries to allow for each question and response sequence that occurs in the conversation between the bot service and the customer. For each retry, you can specify whether a prompt is played by clicking the corresponding section beneath this field.

For example, if you allow two no-input retries and you want to play a prompt after the first retry, select the No Input #1 line and add a prompt. Enable the Play original menu prompt after this retry prompt check box to repeat the menu prompts for the customer.

Number of No Match retries allowed

Most bots will follow-up with the customer if they don't understand the input that's been provided. For example, the bot will simply ask the customer to repeat the information until it successfully captures the response.

As this type of handling is typically built-into the bot by the bot services provider, you may not need to specify this setting in the Bot block.

After Final No Input

Add the prompt to play after the maximum number of permitted No Input retries is reached.

As this block is in the Self Service phase, you can also specify a target destination for the application to jump to, such as another block in the Self Service phase or to the Assisted Service or Finalize phase of the application.

After Final No Match

Add the prompt to play after the maximum number of permitted No Match retries is reached.

As this block is in the Self Service phase, you can also specify a target destination for the application to jump to, such as another block in the Self Service phase or to the Assisted Service or Finalize phase of the application.

Des bot retry allow.png

Results tab

Specify the variables that will hold the bot responses and status flags, as returned to the Bot block from the bot services provider. Each variable is described in more detail below.

Des bot results tab.png

Bot responses

Store latest response from bot

This variable stores details about the latest conversation that the bot engine had with a customer. For example, the results for a Dialogflow bot used to book a ghost removal service might look like this (JSON formatted):

  "status": {
    "code": 0,
    "message": null
  "data": {
    "botName": "MySampleServiceBookingBot",
    "botAlias": null,
    "sessionId": "ABC123",
    "state": "SUCCESS",
    "intent": "Book a Ghostbuster",
    "intentScore": 1,
    "slots": {
      "neighbourhoods": "Queens",
      "location": "backyard",
      "date": "2020-01-11T12:00:00-05:00",
      "ghost": "Zuul the Gatekeeper"
    "slotsData": null,
    "inputTranscript": "today",
    "message": "",
    "attributes": {},
    "error": null,
    "recognitionConfidence": null,
    "stability": null

In the example above, some of the details that were returned include:

  • botName – name of the bot that was invoked.
  • sessionID – unique ID assigned to the session.
  • state – indicates SUCCESS if everything worked.
  • intent – the intent that was detected (i.e. what the customer wanted to do).
  • slots – the details that the bot collected from the customer to fill the associated slots (or entities) for the intent.
  • inputTranscript – the utterance (voice or chat input) that the bot received from the customer.

Store bot invocation result code

This variable stores the HTTP status code received from the bot when it was last invoked by the application. For example, a result code of 200 (OK) indicates that the bot was successfully invoked.

Other result codes, such as 401 (Unauthorized) or 403 (Forbidden), can indicate there was a problem reaching the bot service.

Bot status flags

Bot invocation or system error

If true, this indicates that Designer was not able to successfully reach or invoke the bot service. There could be an issue with the system, or you might need to check the credentials provided for your bot service in the Bot Registry. Otherwise, this returns false.

Bot engine execution error

If true, this indicates that Designer was able to communicate with the bot, but an error occurred while the bot engine was processing the request. For example, the bot returned an incorrect response and triggered the Error Handler block. Otherwise, this returns false.

Viewing the results data

You can view the results data in Designer Analytics by going to the Session Detail Records dashboard. In the All Events panel, find the application instance you want to check and then filter or search for the data you want to view.

For example:

Des bot results sample.png

Bot Option blocks

Additional Bot Option "child" blocks for each intent are also created, along with an Error Handler block. For each Intent, you can go to its related Bot Option block to edit its label and give it a more meaningful name.

In the properties for the Error Handler block, you can specify the action to take if an error occurs (for example, go to another block or the Assisted Service phase):

Des error handler block.png

You can also add other blocks below the intent option block when you want to add some additional logic or processing, such as a Shared Module that will be called when that intent is detected.