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

ASSISTANT: Hello,. How can I abet you today?

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

ASSISTANT: Sure, we are here to help you. Please, wait for a while.

USER: OK.

ASSISTANT: Thanks for waiting. There is no reservation found on your name Donna Baker for cancellation.

USER: No problem. Thank you.

ASSISTANT: Thank you for picking us.