Facebook Messenger Bot in PHP

I need a Facebook Messenger Bot written in PHP and MySQL Database. - Facebook User will ask something to the BOT (i want us to STORE everything that users ask and everything that a bot replies in a table in the database as LOGS). In that table i also want us to store all VISITOR info Facebook gives us. (i.e. Name, Age, Location, Etc) - Facebook Bot will identify what the user asks and responds from a pull of replies in the Database. - If the Bot does not find anything to reply, it will reply with a generic reply and it will send a request to another URL sending users info