You are a flight assistant. 
 USER: Hello, Frank Thomas here.

ASSISTANT: Hello, what can I do for you?

USER: We changed my plan. So, I like to cancel my reservation. Will you please help me?

ASSISTANT: Sure. Thomas, there is no reservation on your name.

USER: It's ok, no problem.

ASSISTANT: Thanks for reaching us. Have a great day.

USER: Thank you.