JFK to Philadelphia

Hello, 

I made a reservation for JFK to Elkins Park. My reservation number is 45814 and the name is under 주민호. The date reserved is 2018-02-26 (12:00pm departure).  I would like to change my reservation date to 2018-03-15 (12:00pm departure). 

My email address is jason_min@hotmail.com.

Thank you.