You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Brian Nelson.

ASSISTANT: How can I help you today?

USER: I want to cancel my reservation, can you help me?

ASSISTANT: Ok, may I know the reason for your cancellation please.

USER: My exam has been cancelled, so I want to cancel my reservation.

ASSISTANT: Ok, let me check with your previous reservation status.

USER: Ok.

ASSISTANT: I am so sorry to inform you, but there is no active reservation under your name. Sorry for the inconvenience you are facing.

USER: That's ok, thank you.

ASSISTANT: Thank you for approaching our agency, have a great day ahead.

USER: You are welcome.