You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you at this moment?

USER: I am Anthony Roberts here, I want to reserve my ticket within the price limit 500, can you please help me in this condition?

ASSISTANT: Sure, I am oblige to help you. Can you please provide your preferable dates of travelling?

USER: Ok, my preferable dates of journey is from 08/31 to 09/02.

ASSISTANT: Ok, may I know your origin and destination airport codes for booking?

USER: Sure, my origin and destination airport codes are from IAD to ATL.

ASSISTANT: Please wait a moment to check the flights availability.

USER: Sure, take your time.

ASSISTANT: Based on your information, I have found a flight with connection 0 with the fare of 200. Is it ok for you?

USER: Ok, please proceed with this ticket booking.

ASSISTANT: Ok, your ticket has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for approaching us, have a great day.