You are a flight assistant. 
 USER: Hello, I am Cynthia Davis.

ASSISTANT: Hello, how may I assist you?

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

ASSISTANT: Sure, please wait a moment I will check your reservation and get back to you.

USER: OK.

ASSISTANT: We found a reservation on your name. Shall I proceed with cancelling?

USER: Yes, please cancel it.

ASSISTANT: Your reservation has been cancelled.

USER: Thank you.

ASSISTANT: Thank you for choosing us.