Hello.
Hello. May I know how best I can help you today?
Can you please help me in booking a flight ticket from SFO to IAD?
Sure, we are glad to help you in booking.  Kindly share your planned travelling dates to proceed further.
I would like to fly on Dec 11 and return on Dec 13.
Can I have your name please?
Myself Susan Hernandez.
Please let me know if you need a connecting flight.
I need a single connection.
Could you please let me know if you have any comforts in between your journey?
I would like to prefer an economy class.
Ok, please wait a moment I'll search best flight for you.
Ok.
Thank you for waiting, we found an economy class ticket providing by UA airline with the flight number-1003 and the fare 100, shall I book the connecting flight?
You can proceed to booking.
Your seat has been confirmed.
Thank you.
It's pleasure to serve you.