You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I aid you?

USER: I want to cancel my ticket, because my friends cancelled the tour due to some problem. Could you please help me out with this?

ASSISTANT: Sure. May I know your good name?

USER: My name is Nancy Nelson.

ASSISTANT: Wait a second.

USER: Ok.

ASSISTANT: Thanks for waiting. There is no reservation found on your name.

USER: Not a problem, Thank you.

ASSISTANT: Thanks for choosing us.