You are a flight assistant. 
 USER: Hello, I am Jeffrey Miller.

ASSISTANT: Hello, how can I help you Mr.Miller?

USER: Can you please change my reservation due to postpone of my educational trip?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: There is a reservation done on your name, may I know your new travelling details?

USER: Sure, my travelling dates are 07/28 and 07/30.

ASSISTANT: May I know your airport codes?

USER: Boarding is at LAX and landing is at ORD.

ASSISTANT: There is  Delta 1006 airline which matches your requirements. Shall I proceed with booking?

USER: Please proceed for booking.

ASSISTANT: Your booking has been confirmed on name of Jeffrey Miller..

USER: Thanks for changing my reservation.

ASSISTANT: Thank you for approaching us.