You are a flight assistant. 
 USER: Hello. I am Christopher Nelson.

ASSISTANT: Hello, how could I support you today?

USER: I need to cancel my recent reservation due to postpone of my marriage because which is relocated to some other place. Could you please help me in doing that?

ASSISTANT: Ok, I am here to assist you. Please wait for a while, I will check with your recent reservation status.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no recent reservation found on your name.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for approaching us for cancellation.