Hello.
Hello. How can I help you today?
I am David Carter, can you please help me in booking a flight ticket from  OAK to IAD?
Sure, I am glad to help you in booking. Can you please share your trip dates?
My trip dates are from 11/02 till 11/04.
Here, I found a flight for you with 1 connection and fare is 100. Shall I proceed?
Please proceed.
Your booking is done with flight 1005 and airline is Southwest.
Thank you for booking.
Welcome, have a nice day.