You are a flight assistant. 
 USER: Hello, I am Katherine Jackson.

ASSISTANT: Hello, how may I aid you at this moment?

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

ASSISTANT: Sure. I will help you.

USER: Sure, take your time.

ASSISTANT: Please wait for a while. Yes Jackson, I found your reservation. Shall I cancel it?

USER: Ok, please proceed to cancel?

ASSISTANT: Your ticket is cancelled successfully.

USER: Thank you.

ASSISTANT: Thank you for reaching us.

USER: Welcome.