You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, can you please tell us for what help you approached us?

USER: William Evans here. I was made a reservation earlier in this week. But I want to cancel my reservation. Can you please help me for that?

ASSISTANT: Sure, I am glad to help you. Evans, there is no reservation with your name to cancel further.

USER: Ok. Anyway, thank you for the information.

ASSISTANT: My pleasure, have a great day.