You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you?

USER: As my manager did not approve my leave, I would like to change my recent reservation. Can you aid me with this?

ASSISTANT: Sure, may I know your name for chceking?

USER: Myself Brian Parker.

ASSISTANT: Ok, please wait for a while. I will check and let you know about your reservation status.

USER: Sure, take your time.

ASSISTANT: Sorry, there is no active reservation found under your name.

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

ASSISTANT: Thank you for opting us.