You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how best I can aid you today?

USER: I would like to cancel my recent reservation because my brother marriage was postponed, can you help me?

ASSISTANT: Sure, I am glad to help you with cancellation.

USER: Thank you.

ASSISTANT: Can you please mention your name to check with your previous reservation?

USER: I am Emily White.

ASSISTANT: Ok, please wait for a couple of minutes.

USER: Sure.

ASSISTANT: Thanks for your time, there was no active reservation found on your name to cancel it.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for approaching us.