You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I best assist you today?

USER: Prepone plan came into picture owing to announcement of baby boy's birth. Could you please change my existing reservation?

ASSISTANT: Sure, I would be happy to help you. May I know your good name to change your reservation?

USER: I am Benjamin Allen.

ASSISTANT: Ok, wait for a moment I will check the status on your name and let you know.

USER: Sure.

ASSISTANT: Thanks for your precious time. There was no existing reservations found on your name.

USER: Ok, that's not a problem.

ASSISTANT: Thanks for approaching us.

USER: Thanks for your great assistance.