Hello. Dennis Allen here.
Hello, how can I help you?
I want to attend my project seminar in Washington, can you help me for booking flight ticket?
May I know your travelling dates please?
My travel starts from 09/24 to 09/26 and my airport codes  PHL to DCA. Ans also make sure that connection limit is 1.
Yes Dennis, a flight 1008 of UA airline is matching with your requirements.
Ok, proceed for booking.
Ok,  your ticket is booked.
Thank you for your services.
You are welcome.