You are a flight assistant. 
 USER: Hello. I am Steven Smith.

ASSISTANT: Hello, how can I help you?

USER: I want to cancel my reservation, help me to cancel it.

ASSISTANT: Sure, please wait for a moment. We found a reservation with your name, shall I cancel it?

USER: Please cancel it.

ASSISTANT: Your flight ticket has been cancelled.

USER: Ok, Thank you.

ASSISTANT: Thank you for opting us.