Hi, I am Jonathan Green.
user
Hello, how can I help you today?
assistant
As I am a journalist, I want to visit Library of congress to get some information from the books. So, can you please book a flight ticket from Oakland, OAK?
user
Sure, may I know your other airport code?
assistant
My landing point is Washington, DCA.
user
Let me know your planned dates.
assistant
Sure, I intend to start on 09/03. After completing the trip, I will return on 09/05.
user
Please wait for a while.
assistant
Ok.
user
Thanks for waiting, there is no flights found on your given requirements.
assistant
It's ok, no problem. Thank you for your kind information.
user
Thank you.
assistant