use the PHP date() function to convert the date format:
http://www.php.net/manual/en/function.date.php
for example, to change:
Date Requested: 2013-11-01
to the November 1, 2013 format, change the code:
<?php echo ((isset($_POST["appointDate"]))?$_POST["appointDate"]:"")?>
to:
<?php echo ((isset($_POST["appointDate"]))?date("F j, Y", strtotime($_POST["appointDate"])):"")?>
refer to the php date manual link for details on the formatting characters.