You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Due to inconvenience of work, I want to cancel my reservation. Can you please help me for that?

ASSISTANT: May I know your name please?

USER: My name is Michael Phillips.

ASSISTANT: Sorry to say, there is no reservation on your name in our database.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for opting us.