You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I provide assistance for you?

USER: I would like to cancel my reservation because I have some important work in my office. Can you please help me?

ASSISTANT: Sure, could you please provide your name to check the reservation details?

USER: Sure, my name is Anna Lewis.

ASSISTANT: Sorry to say, I did not find any details regarding your reservation.

USER: Not an issue, thank you for checking.

ASSISTANT: Yow are welcome, have a good day.