You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My holiday vacation has been postponed.Can you please help me for cancelling the recent reservation?

ASSISTANT: Sure, may I know your name please?

USER: Sure, my name is Nicholas Robinson.

ASSISTANT: Ok Nicholas, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry Nicholas, there is no reservation found on your name.

USER: Ok, It's fine. Thank you for your information.

ASSISTANT: Thank you, for consulting us.