You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to cancel my recent reservation due to some health issue. Can you help me?

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: May I know your name please?

USER: Yes, I am Betty Hill.

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

USER: Ok, not a problem. Thank you for your information.

ASSISTANT: Thank you for opting us.