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