How do I tell Alexa to prompt user for input - aws-lambda

Question

I need to tell alexa to prompt user for input then store that input in a variable to be used in my code.
InvocationName: send mail
Alexa: Tell me mail subject
User: Test email
Alexa: Okay, tell me message body.
User: This is just a sample test
Alexa, okay, tell me receiver email
User: test#gmail.com
Below is my intent schema:
{
"interactionModel": {
"languageModel": {
"invocationName": "send mail",
"intents": [
{
"name": "AMAZON.CancelIntent",
"samples": []
},
{
"name": "AMAZON.HelpIntent",
"samples": []
},
{
"name": "AMAZON.StopIntent",
"samples": []
},
{
"name": "AMAZON.FallbackIntent",
"samples": []
},
{
"name": "AMAZON.NavigateHomeIntent",
"samples": []
},
{
"name": "SendMailIntent",
"slots": [
{
"name": "ReceiverEmail",
"type": "AMAZON.SearchQuery"
}
],
"samples": [
"mail",
"send mail"
]
}
],
"types": []
},
"dialog": {
"intents": [
{
"name": "SendMailIntent",
"confirmationRequired": false,
"prompts": {},
"slots": [
{
"name": "ReceiverEmail",
"type": "AMAZON.SearchQuery",
"confirmationRequired": false,
"elicitationRequired": true,
"prompts": {
"elicitation": "Elicit.Slot.838288524310.965699312002"
}
}
]
}
],
"delegationStrategy": "ALWAYS"
},
"prompts": [
{
"id": "Elicit.Slot.838288524310.965699312002",
"variations": [
{
"type": "PlainText",
"value": "Enter subject"
}
]
}
]
}
}
and below is the code I have been able to come up with:
// sets up dependencies
const Alexa = require('ask-sdk-core');
const i18n = require('i18next');
const languageStrings = require('./languageStrings');
const SendMailHandler = {
canHandle(handlerInput) {
const request = handlerInput.requestEnvelope.request;
// var code = this.event.request.intent.slots.code.value;
//console.log(code)
// checks request type
return request.type === 'LaunchRequest'
|| (request.type === 'IntentRequest'
&& request.intent.name === 'SendMailIntent');
},
handle(handlerInput) {
const speechText = 'Ok. Tell me the mail subject'
const response = handlerInput.responseBuilder
.speak(speechText)
.reprompt(speechText) // <--- Here is our reprompt
.getResponse();
console.log(response)
return response;
},
};
// Omitted default Alexa handlers
const skillBuilder = Alexa.SkillBuilders.custom();
exports.handler = skillBuilder
.addRequestHandlers(
SendMailHandler,
)
.lambda();

Answer 1

You should use dialog management with 2 slots.
As I can see currently you only collect one slot (ReceiverEmail) with dialoge management.
But you need also to create a slot for the text you want to send.
Later in your code you need to check if the dialogue is in status COMPLETED.
See the example https://github.com/alexa/skill-sample-nodejs-petmatch/ or this video: https://www.youtube.com/watch?v=u99WMljnQXI