You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: James Lee here. I want to cancel my recent reservation, can you help me in doing that?

ASSISTANT: Sure, I will help you. Please wait for a moment. Sorry, there is no reservation on your name.

USER: Ok, no problem.

ASSISTANT: You are welcome, thank you for reaching us. Have a nice day.

USER: Thank you for the information.