You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I aid you?

USER: Can you help me in cancelling my reservation?

ASSISTANT: Sure, may I know your good name please?

USER: I am Kevin Williams.

ASSISTANT: OK, wait for a while. I will check and get back to you.

USER: OK.

ASSISTANT: Thank you for waiting, there is no reservation found based on you name.

USER: OK, thank you for the information.