Hi, Anna Scott here.
Hello Anna, how may I help you today?
 I need a flight with my budget of 500, Can you make a reservation for me?
Sure, I am happy to help you. May I know your exact airport codes?
Sure, my source and destination airport codes are HOU and ORD.
Ok, when you are willing to travel?
Sure, I want to fly on 10/04 and back on 10/06.
Ok, wait for a minute.
Sure, I want a direct flight.
Sorry Anna, there are no flight's available with your connection limit.
No problem, thank you for your help.
Thank you for availing our services.