You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Due to a sudden meeting at office with my client on my boarding day, I want to cancel my recent reservation. Can you help me with cancellation on the name of Carol Adams?

ASSISTANT: Sure, may I have your name please? Ok, please wait.

USER: Sure.

ASSISTANT: Thanks for waiting, no active reservation found on your name in the database.

USER: That's Ok, thanks for your help.

ASSISTANT: Thank you for choosing us.