You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your name?

USER: Sure, my name is Cynthia Adams.

ASSISTANT: Cynthia, how may I assist you?

USER: My business trip has been postponed.Can you please help me to cancel the recent reservation?

ASSISTANT: Sure, just wait a minute.

USER: OK.

ASSISTANT: I am really sorry Cynthia, there is no flight available with your name to cancel.

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

ASSISTANT: OK, you are welcome. Have a nice day.