You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what can I do for you now?

USER: I want to change my recent reservation as my meeting with my lawyer is delayed a week. So, I request you to please change my reservation.

ASSISTANT: Sure. May I have your name to change the reservation?

USER: Sure, my name is Christopher Edwards.

ASSISTANT: Thanks for your name. There was no reservation on your name to change.

USER: Ok, no problem. thanks for the information.

ASSISTANT: Thank you for availing us, have a nice day.