You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Daniel Roberts. Can you cancel my previous reservation?

ASSISTANT: Sure, I will help you with the flight ticket cancellation.

USER: Thank you.

ASSISTANT: May I know your name please? Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting. But I am sorry to say that there is no reservation on your name.

USER: That's fine. Anyway, thank you for your help.

ASSISTANT: Thank you.