Hot to get callback data from telegram bot message

I'm developing a Telegram Bot via PHP and I want users to answer bot question.

For Example:
Bot: What is your name?
User: (Reply)

But I don't know how to process user reply for specific question from bot.

If I receive user reply via webhook, it doesn't contain last bot message, and I don't know what question this reply is.

Webhook has parameter callback_query, but it works only for messages that contains inline keyboard.

Can you help please?