Hi, I am Ashley Thompson.
user
Hello. How can I serve you?
assistant
I would like to book a flight ticket to Washington DC-DCA to attend client meeting on 12/30. Can you help  me to book a flight ticket?
user
Sure, Can you let me know your return date?
assistant
I intend to return on 01/01.
user
Please share me your source airport code.
assistant
I need to start from Oakland, CA-OAK.
user
Do you have any connection limit?
assistant
I prefer one connection.
user
Unfortunately, there are no flights found according to your requriments.
assistant
Ok, no problem. Thanks for your help.
user
Thank you for remaining positive.
assistant