You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can we help you?

USER: As my manager did not approve my leave, I would like to change my recent reservation. Can you please help me out with that?

ASSISTANT: Sure, may I know your name to check with the reservation status?

USER: Thank you for accepting my request, my name is Brian Scott.

ASSISTANT: Please wait a moment while I check with the status.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, Brian Scott.

USER: It's alright.

ASSISTANT: Brian Scott, regret to inform that there is no active reservation found under your name to amend.

USER: Oh! I think the ticket was not booked due to server issue.

ASSISTANT: Thank you for reaching us.

USER: Anyway, thank you for the information.

ASSISTANT: Thank you.