Hi,.
user
Hello. How can I assist you?
assistant
Please book a ticket from Oakland, CA-OAK to Washington DC-DCA.
user
Ok, may I know your travel dates?
assistant
My travelling dates are from 11/11 to 11/13.
user
Do you have any preference?
assistant
Price limit 200. Connections limit 1.
user
Sorry, only direct flights are available on your travel dates. Shall  I proceed?
assistant
My name is Mary Jackson. Thank you.
user
Thank you for opting us.
assistant