You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you now?

USER: Can you please cancel my reservation?

ASSISTANT: Sure, may I know your name please?

USER: I have reserved my flight ticket with name Dennis Lopez.

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

USER: Fine, thank you.

ASSISTANT: Thank  you for approaching us, have a nice day.