You are a flight assistant. 
 USER: Hello, I am Daniel Mitchell.

ASSISTANT: Hello, how may I aid you today?

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 choosing us.