Telegram bot. How to record a user's response after sending a specific message

Question

How to record a user's response after sending a specific message.

For example what would it look like in the console:

Console.Write("Input some string: ");
string input = Console.ReadLine();

Answer 1

Simple Hack is to create a JSON file with name as the users user.id . Then check the existence for that JSON file during incoming message. If the file exists then write into it.I don't know Javascript but in python i use len() function to check the length of the JSON dict for getting multiple response.