You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be a help for you?

USER: I need to cancel my reservation, can you help me out?

ASSISTANT: Sure, I am delighted to help you. May I know your good name please?

USER: Myself Katherine Jones.

ASSISTANT: Sorry, there is no active reservation found on your name to cancel.

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

ASSISTANT: Thank you for approaching us.

USER: Welcome.