How to register a user through Telegram bot?

Question

JavaScript

Friends, I write in Google Apps Scrip telegram bot for my friends.
They fix and fix computers. They mainly work with legal entities.
so they need a ticket system for processing applications.
We decided that the telegram bot is perfect for processing applications.
The first thing to do is to register a company.
To do this, I brought up a button:

function doPost(e){
  var data = JSON.parse(e.postData.contents);
  var text = data.message.text;
  var id = data.message.chat.id;
  var name = data.message.chat.first_name + " " + data.message.chat.last_name;
  var answer = "Салам " + name + "! Спасибо за обращение "+ text;
  
  Logger.log(text + " command passed");
  
  if(text =="/start"){
    var options = [
          [{ text: 'Новый заказ', callback_data: 'order' }],
          [{ text: 'Регистрация', callback_data: 'registration' }],
          [{ text: 'Реквизиты', callback_data: 'data' }]
        ];
    sendKeyboard(id, "Приветствую дорогой друг! Чем могу быть полезен?", options, true);  
  }
  else if ( text == "Регистрация" ){
    sendMessage(id, "Введите ваше фио");
  }
  else{
    answer = "Text message passed";
    sendMessage(id, answer);
  }
  SpreadsheetApp.openById(ssId).getSheets()[0].appendRow([new Date(), id, name, answer]);
}

Now, how do I collect data from the user?
This is the full name, name of the office, contacts.
If in parallel to me several people will be hollowed out, how can I process their requests?
If, for example, the user entered a full name, how to understand what this full name is and offer him to enter the next value?

Answer 1

Maybe it's easier to hire a freelancer?
Full name is three words separated by spaces, starting with a capital letter. You just check the string against this rule and that's it.