How to ask sequential questions in telegram bot?

Question

JavaScript

How to implement a poll-dialogue? that is, I ask a question, the person answers briefly, perhaps only yes / no, and the bot continues to hang questions?

const Telegraf = require('telegraf');
    const bot = new Telegraf(...);

    bot.command('start', (ctx) => {
      ctx.reply("Привет, хочешь пообщаться?")
      bot.hears('Да', (ctx) => ctx.reply('Классно, слушай, а ты мальчик или девочка? Да/Нет'))
      bot.hears('Да', (ctx) => ctx.reply('Да/Нет'))
    })

    bot.launch();

Answer 1

Write a state machine