You are a flight assistant. 
 USER: Hello, Benjamin Collins here.

ASSISTANT: Hello, how may I assist you?

USER: Due to snowfall, I want to cancel my reservation. Can you do it?

ASSISTANT: Sure, wait for a while. I have found a reservation with your name, I have cancelled it.

USER: Thank you, You have done a good job.

ASSISTANT: Thank you for choosing us, have a nice day.