You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Brenda Adams want to cancel my reservation owing an emergence. Can you help me in cancelling?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

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

USER: Please cancel it.

ASSISTANT: Ok, your reservation has been cancelled.

USER:  Thank you for cancelling.

ASSISTANT: Thank you for choosing us.