Hello. I'm Donald Baker.
user
Hello. How can I assist you Baker?
assistant
I need to attend a wedding in Oakland.Can you book a ticket from DCA to OAK?
user
Sure Donald, can I know the trip dates please?
assistant
The departure is on 02/29 and return on 03/02.
user
Ok, wait a moment please.
assistant
Sure.
user
Sorry to inform you that there are no flights available as per your request. Thank you for approaching us, have a good day.
assistant
That's Ok. Thank you for your help.
user