sample-replaceDialog.js

const builder = require('botbuilder');

const connector = new builder.ChatConnector({
    appId: process.env.MICROSOFT_APP_ID,
    appPassword: process.env.MICROSOFT_APP_PASSWORD
});

const bot = new builder.UniversalBot(connector, [
    (session, args, next) => {
        const card = new builder.ThumbnailCard(session);
        card.buttons([
            new builder.CardAction(session).title('Add a number').value('Add').type('imBack'),
            new builder.CardAction(session).title('Get help').value('Help').type('imBack'),
        ]).text(`What would you like to do?`);

        const message = new builder.Message(session);
        message.addAttachment(card);

        session.send(`Hi there! I'm the calculator bot! I can add numbers for you.`);
        // we can end the conversation here
        // the buttons will provide the appropriate message
        session.endConversation(message);
    },
]);

bot.dialog('AddNumber', [
    (session, args, next) => {
        let message = null;
        if(!session.privateConversationData.runningTotal) {
            message = `Give me the first number.`;
            session.privateConversationData.runningTotal = 0;
        } else {
            message = `Give me the next number, or say **total** to display the total.`;
        }
        builder.Prompts.number(session, message, {maxRetries: 3});
    },
    (session, results, next) => {
        if(results.response) {
            session.privateConversationData.runningTotal += results.response;
            session.replaceDialog('AddNumber');
        } else {
            session.endConversation(`Sorry, I don't understand. Let's start over.`);
        }
    },
]).triggerAction({matches: /^add$/i});

module.exports = bot;