Hello,. I am Jeffrey Moore.
Hello, how may I assist you today?
I want to book a flight ticket to attend Science Expo in Denver, DEN.
Sure, could you please provide your source code?
Can you please help me in booking  a flight on 04/21 to 04/23. My source code is DCA. I need a connected flight.
Ok, do you have any other restrictions to be met?
Price should be under 500.
Ok, please wait for a while, let me check with the airlines and revert to  you.
Sure.
Thanks for your valuable time, we are glad to inform you that we have found a Delta airline, flight number-1018 connections-1 and price limit is 100. Would you like me to proceed?
Ok, please proceed.
Sure your reservation is done successfully.
Thanks for your help.
Thanks for opting us, have a safe journey ahead.