Hello.
Hello. How can I help you?
I am Brian Edwards. Help me to book a flight ticket from Houston, HOU to Washington, IAD.
Sure, can you share your travelling dates?
Sure, I want to depart on 11/10 and return on 11/12.
Give me a minute.
Sure.
There is  a flight with fare 100 in airline Southwest, the number is 1004 with 1 connection.
Ok, proceed for booking.
Your ticket is booked, happy journey.