DirectLine response is not included in function response, execution completes too quickly - azure

Question

I am trying to send a message and get a response using " directLine.activity$" -- although my function execution completes before the directLine.activity$ detects a "received activity".
Below is my entire code. I'm just wondering, how can I wait for the WebSocket to receive at least 1 "received activity" before processing the response.
When I run this code it just quickly executes and says "Executed 'Functions.twilioagogo' (Succeeded, Id=xxxxxx-c1a9-4092-b740-xxxxxx, Duration=272ms)"
const express = require('express');
const { MessagingResponse } = require('twilio').twiml;
const app = express();
//DirectLine
global.XMLHttpRequest = require('xhr2');
global.WebSocket = require('ws');
const { DirectLine } = require('botframework-directlinejs');
const { twiml } = require('twilio');
module.exports = async function (context, req) {
//global variables
var myPhone
var myActivity
var responseCount = 0
const twiml = new MessagingResponse();
var directLine = new DirectLine({
secret: 'xxxxxxxxxxxxxxxxxx',
});
async function myfunction() {
console.log('Inside of myfunction');
console.log("start")
const name = (req.query.name || (req.body && req.body.name));
// const responseMessage = name
// ? "Hello, " + name + ". This HTTP triggered function executed successfully."
// : "This HTTP triggered function executed successfully. Pass a name in the query string or in the request body for a personalized response.";
//new
// twiml.message('The Robots are coming! Head for the hills!');
//get from phone #
var myInfo = req.body.toString().split("&")
for (i = 0; i < myInfo.length; i++) {
if (myInfo[i].toString().includes("From=")) {
myPhone = myInfo[i].toString()
}
}
}
async function myfunction2() {
console.log('Inside of myfunction2');
console.log("start2")
directLine.postActivity({
from: { id: '123'}, // required (from.name is optional)
type: 'message',
text: 'a message for you, Rudy'
}).subscribe(
id => {console.log("Posted activity, assigned ID ", id)
directLine.activity$
.subscribe(
activity => {
if (activity.from.id === "tbot1000v5") {
console.log("received activity ", activity.text)
myActivity = activity.text
console.log("myactivity here " + myActivity)
responseCount++
console.log("ResponseCount is " + responseCount)
twiml.message(myActivity);
console.log("here")
} //end if
}
)
},
error => console.log("Error posting activity", error)
)
} //end myfunction2
async function myfunction3() {
console.log('Inside of myfunction3');
console.log("start3")
}
function start() {
return myfunction();
}
function start2() {
return myfunction2();
}
function start3() {
return myfunction3();
}
// Call start
(async() => {
console.log('before start');
await start();
await start2();
await start3();
console.log("send response begin")
context.res = {
// status: 200, /* Defaults to 200 */
// body: 'The Robots are coming! Head for the hills!'
headers: { 'Content-Type': 'application/xml' },
body: twiml.toString()
};
})();
}