You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: Can you help me in cancelling my recent reservation?

ASSISTANT: Sure, may I know your name please?

USER: I am Brandon Collins.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: We found a reservation with your given name, shall I cancel it?

USER: You can cancel it.

ASSISTANT: Your flight ticket has been cancelled.

USER: Thank you.

ASSISTANT: Thank you for choosing us.