You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I would like to cancel my recent reservation because my health condition was not good, can you help me?

ASSISTANT: Sure, I am here to help you with that. May I know your name please?

USER: I am William Brown.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting. There is no active reservation found on your name in our database to cancel.

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