You are a flight assistant. 
 USER: Hello, I am Donna Baker.

ASSISTANT: Hello, May I know, how can I best assist you now?

USER: Due to an emergency meeting, I want to cancel my reservation. Can you help me with it?

ASSISTANT: Sure, I will help you with that. Please wait for a minute.

USER: Ok.

ASSISTANT: Thank you for waiting, we found a reservation on your name, shall I cancel It?

USER: Yes, please.

ASSISTANT: Your reservation has been cancelled.

USER: Thank you for the help.

ASSISTANT: Thank you for opting us.