You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: My friend marriage was postponed so I need to change my reservation, can you please help me to change my reservation?

ASSISTANT: Sure, may I know your name please?

USER: I am Jerry Jones.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found on your name.

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

ASSISTANT: Thank you.