Hello, I am Eric Green.
Hello, how may I assist you at this moment?
I need to fly from DCA to DTW, can you please book a flight ticket?
Sure, we are euphoric to help you. Can you please help  me with providing your journey dates?
My journey dates are 07/03 to 07/05.
How much you can spend for flight ticket?
I can spend up to 5000.
Ok, please hold on for a moment.
Sure.
We found a connecting flight that matches your essentials, and its cost you only 100, flight number 1000. Shall I proceed?
Yes, you can.
Your ticket has been reserved with JetBlue airlines.