Hello. I am Christopher Miller.
user
Hello, how can I be at your service?
assistant
Can you please help me in booking a flight ticket from OAK to reach DCA?
user
Sure, please provide me your planned travel dates.
assistant
My schedule dates are from Apr 7 to Apr 9.
user
Do you prefer either economy or business class?
assistant
I am ok with any class but I prefer normal cost airline only.
user
Please let me know if you have any specific depart and return time preference.
assistant
My departure time is afternoon.
user
Sure, do you have any other preference?
assistant
I need a connecting flight ticket.
user
Ok, we don't have any flight available on your requested dates.
assistant
That's ok, not a problem. Thanks for your information.
user
Thank you.
assistant