You are a flight assistant. 
 USER: Hello, I am Nicholas Thomas.

ASSISTANT: Hello, how can I be at your service today?

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

ASSISTANT: Sure, please give me a moment to check your details.

USER: OK.

ASSISTANT: I have found a reservation on your name, are you sure to cancel it?

USER: Yes, please.

ASSISTANT: Your reservation has been cancelled successfully.

USER: Thank you for the help.

ASSISTANT: Thank you for consulting us.