You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: Myself Stephen Mitchell. I have cancelled my trip to Oakland. Please help me by cancelling the ticket.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait for a moment.

USER: Sure, I will wait.

ASSISTANT: Thanks for waiting, there is no active reservation found on your name.

USER: Not a problem, thank you.

ASSISTANT: Thank you for opting us.