title: use only required tables for conversation in php-telegram-bot
body: <p>I installed <a href="https://github.com/php-telegram-bot/core" rel="nofollow noreferrer">php-telegram-bot</a> in <strong>laravel 5.5</strong>. and there I used default users table that laravel is provided to Auth and login operations. </p>
  
  <p>In the other hand to register users that comes from telegram bot, we know that should use <code>conversations</code> feature to get some user information like <strong>first_name</strong> , <strong>last_name</strong> , ... . </p>
  
  <p>To use conversation we should enable MySQL feature in your package; and in this case that package offers that run <a href="https://github.com/php-telegram-bot/core/blob/master/structure.sql" rel="nofollow noreferrer">structure.sql</a> file that included many tables that I do not need. </p>
  
  <p>I just need those tables for <strong>conversation</strong>. Any other tables like <code>inline_query</code> ,<code>callback_query</code>,<code>edited_message</code> is not useful in this case. </p>
  
  <p>Now I want to know is possible to use required tables to conversation only? and what are them? In the other words <em>Why do we need to use an unused table?</em></p>