Hello.
Hello. How can I aid you today?
I want to travel from IAD to OAK. Can you help me to book a flight ticket?
Sure, I will help you with that. Can you please share your preferable travel dates?
I want to fly in the flight on Apr 22 and Apr 24.
May I know your name please?
David Carter.
Do you have any class preference?
I prefer to travel in economy class.
Would you like to board a connecting flight or  direct flight?
I am looking for a connecting flight.
Do you have any other specifications?
I want to return in afternoon time.
There are no flights available on this route as per your travel dates.
That's ok. Anyways, thank you.
Thank you for reaching us, have a great day.