You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Rebecca Lopez.

ASSISTANT: How can I assist you?

USER: My business meeting has cancelled suddenly.So I want to cancel my recent reservation. Can you please help me out?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: There is no previous reservation matching with your name to cancel.

USER: That's ok. Thank you for your information.

ASSISTANT: Thank you.