You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I want to cancel my recent reservation. Could you help me with that?

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

USER: Benjamin Green.

ASSISTANT: Ok, please wait for a mean while.

USER: Ok.

ASSISTANT: Sorry Green, there is no reservation found as per your name to cancel it in your database.

USER: That's ok, no problem. Thank you.

ASSISTANT: You are welcome.