You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Kevin Harris. I want to cancel my recent reservation, due to some health issue. Can you please help me out?

ASSISTANT: Please wait a while.

USER: Ok, take your time.

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

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for opting us.