You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I'm Matthew Williams. I would like to cancel my reservation due to personal health issue. Can you please help me with that?

ASSISTANT: Please wait a while.

USER: Sure, take your time.

ASSISTANT: There is no reservation on your name in our database.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for opting us.

USER: You are welcome.