You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you out?

USER: I need a flight ticket on 03/19 and return back on 03/21, can you find a flight on those days to write my supplementary exam?

ASSISTANT: Sure, I will help you in booking the ticket.

USER: Thank you.

ASSISTANT: May I know your airport codes too?

USER: Sure, my source code is LGA and my destination code is EWR.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: There is a flight with connection 1 and price 200, can I proceed with this flight?

USER: It is matching my criteria, so you can book my ticket on Gary Thompson.

ASSISTANT: Ok, your ticket has been booked with flight number 1002.

USER: Ok, thank you for that flight ticket booking.

ASSISTANT: Thank you for choosing us.

USER: Welcome.