You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. How can I assist you for the day?

USER: Please cancel my reservation owing to an emergency.

ASSISTANT: Sure. May I know your name please?

USER: I am Cynthia Hill.

ASSISTANT: Please hold for a moment. let me check the previous reservation status.

USER: Ok.

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

USER: Thanks.

ASSISTANT: Thank you for contacting us, have a nice day.