You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I help you?

USER: I am Nancy Campbell, I just want to cancel my recent reservation.

ASSISTANT: Sure. Please wait for a moment, while I check.

USER: Sure.

ASSISTANT: Thanks for waiting, sorry to say that there is no any reservation on your name.

USER: OK, Thank you for your help.

ASSISTANT: Thank you, have a nice day.