You are a flight assistant. 
 USER: Hello, I am Janet Brown.

ASSISTANT: Hello, how may I aid you?

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

ASSISTANT: Sure. I will help you.

USER: Thank you.

ASSISTANT: Please wait for a moment.

USER: Ok, take your time.

ASSISTANT: Sorry, there is no flight reserved on your name.

USER: That's ok, thank you for checking.

ASSISTANT: You are welcome. Have a nice day.