How to run Luis Recogniser on ChoicePrompt - node.js

Question

I have a ChoicePrompt with two options.
[ {
value: 'credit',
synonyms: ['titanium', 'world', 'credit', 'mastercard'],
},
{
value: 'visaPrepaid',
synonyms: ['platinium', 'visa', 'prepaid', 'prepaid card', 'visa prepaid']
},]
The user can either click on the suggested action or type directly on the textbot "I want a credit card"
I wish to run on a Luis query recognition on this text and extract whether the user wanted a credit or a prepaid card. However, I don't know how to interect that string.
I use a WaterfallDialog to show the prompt

Answer 1

There are a couple different ways to build a ChoicePrompt. I use ChoiceFactory.forChannel() to do so. I'm then using imBack which returns the choice as a user text input. Alternatively, you could do a postBack, which would act as more of a trigger, and capture the sent value.
In my case, since the choice is returned as a user text input, I grab the text value from the activity and send that to LUIS. I'm matching on the Greeting intent which, if successful, then returns the intent found.
Hope of help!
async choiceStep ( stepContext ) {
const stepResult = stepContext.context.activity.text;
if ( stepResult ) {
const message = ChoiceFactory.forChannel(
stepContext.context, [
{ value: 'Hello', action: { type: 'imBack', title: 'Hello', value: 'Hello' } },
{ value: 'What is the date?', action: { type: 'imBack', title: 'What is the date?', value: 'What is the date?' } }
], `Which do you choose?`
);
await stepContext.context.sendActivity( message );
}
return { status: DialogTurnStatus.waiting };
}
async choiceLuisStep ( stepContext ) {
if ( stepContext.context.activity.text ) {
const stepResults = stepContext.context.activity.text;
await stepContext.context.sendActivity( `You said: ${ stepResults }` );
const recognizerResult = await this.recognizer.recognize( stepContext.context );
let intent = await LuisRecognizer.topIntent( recognizerResult );
if ( intent === 'Greeting' ) {
await stepContext.context.sendActivity( `Luis recognized: ${ intent }` );
return stepContext.next();
} else {
await stepContext.context.sendActivity( 'No LUIS intent was found.' );
return stepContext.next();
}
} else {
await stepContext.context.sendActivity( 'Thanks for visiting!' );
return stepContext.next();
}
}