You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you now?

USER: I want to cancel my reservation which I made a week ago, can you help me?

ASSISTANT: Sure, I will help you with that. May I know your name please?

USER: David Baker here.

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

USER: Oh, no issues with it, thank you for checking.

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