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