You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Owing to an emergency, I want to cancel my reservation. Can you help me out?

ASSISTANT: Sure, I will help you with the flight ticket cancellation. May I know your name please?

USER: Sure, my name is Dorothy Davis.

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

USER: That's ok, thank you.

ASSISTANT: Thank you.