You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I would like to cancel my recent reservation due to cancel of my event. Could you please help me?

ASSISTANT: Sure, may I know your name?

USER: I am John Hill.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: We found a reservation on your name and it has been cancelled successfully.

USER: Thank you for your assistance.

ASSISTANT: Thank you for choosing us.