Hi.
Hello. How can I help you at this moment?
Can you help me in booking from DCA to OAK, as there is a business meeting to attend?
Sure, I will help you with that. Can you please mention your preferable travel dates?
My trip dates are  Jun 17 to Jun 19.
May I know your name for further process?
I am Ashley Walker.
Do you have any preferences regarding timings of your journey?
I need a direct flight.
Do you have any another specifications?
I prefer a normal-cost airline.
Ok, please hold on a moment.
Sure.
Sorry, no flights are available in this route as per your requested dates.
No issue, thank you.
Thank you for reaching us.