You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you today?

USER: Can you please assist me to cancel my active reservation?

ASSISTANT: Sure, may I know your name please?

USER: Myself Matthew Lee.

ASSISTANT: Please wait a moment I'll check the reservation list.

USER: Ok, I will wait.

ASSISTANT: Thank you for waiting, we found a reservation by this name. Shall I cancel the ticket?

USER: Ok, please cancel it.

ASSISTANT: Your ticket has been cancelled successfully.

USER: Thank you.

ASSISTANT: Thank you.