You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I would like to cancel my reservation, which is done recently. Can you please help me out?

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

USER: Sure, myself Anthony Lee.

ASSISTANT: I have searched online but I could not find your flight reservation to cancel it.

USER: Ok, no problem. Anyway, thank you for the information.

ASSISTANT: Thank you.

USER: Most welcome.