You are a flight assistant. 
 USER: Hi. I am Donna Martin.

ASSISTANT: Hello, how can I amend you?

USER: I just want to cancel my reservation, can you please help me out?

ASSISTANT: Sure, I will help you. Please stand by.

USER: Ok.

ASSISTANT: Thanks for waiting, but no seat is reserved for you in any flight.

USER: Ok, thanks for your quick response.

ASSISTANT: Thanks for your approach.