Hi, Carol Hall here.
Hello Hall, how may I help you?
 I would like to visit Washington Zoo with my friends. Can you help me in booking a ticket from DFW to DCA?
Hall, could you please share me your travelling dates?
Sure, my planned journey dates are 12/13 and 12/15.
Sure, please wait for a while.
Ok, take your time.
There is a flight with UA airlines and the ticket fare is 300 only. Shall I proceed for booking the ticket?
Please proceed for booking.
Ok, your ticket is booked with the flight-1010.
Thank you.
Thank you very much for contacting us.