Laravel 4 Mail中的'From'字段:: send（）

I am creating some booking system and have HTML form in which user enter his email (and other stuff). I would like to get email as if user has send it from his email address, but my Gmail always shows that I have sent it (i.e. sender email address is same as 'username' from app/config/mail.php = [email protected]).I am creating some booking system and have HTML