You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: I am Karen Wright. I need to cancel my recent reservation due to postpone of my client meeting. Could you please help me in doing that?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting, no reservation found with your name to cancel.

USER: No problem, thank you for your information.

ASSISTANT: Thanks for approaching us.