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

ASSISTANT: Hello, how may I help you?

USER: As my managed did not approve my leave, I would like to cancel my recent reservation.

ASSISTANT: Sure, please give me a moment.

USER: Ok.

ASSISTANT: I have found your reservation, shall I cancel it?

USER: Ok, please proceed for cancel.

ASSISTANT: Your ticket is cancelled. As it is non refundable flight, you will not receive any refund.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.