You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I aid you?

USER: I am Ashley Walker. I make a reservation earlier to attend a get together party with my college friends. Due to some issues in college it is postponed. Can you please help me with the change reservation?

ASSISTANT: Sure, I  can help you out. Please wait a while.

USER: Sure.

ASSISTANT: Thank you for your time. We didn't found any reservation by this name.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for opting us.