You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I would like to cancel my reservation on the name of Dorothy Davis, so can you please help me in cancellation?

ASSISTANT: Sure, please wait.

USER: Sure.

ASSISTANT: There is no reservation found with your name.

USER: No problem, thanks for your service.

ASSISTANT: Have a good day.