Hi.
user
Hello.
assistant
I am Brian Barker.
user
How may I assist you?
assistant
I am planning to travel from OAK to DCA, can you help in booking a flight for me?
user
May I know your travelling dates please?
assistant
My travelling dates are 07/28 to 07/30.
user
Ok, please allow me to check with available flights.
assistant
Sure.
user
Thank you for waiting and sorry for my late response.
assistant
It's ok.
user
Sorry to tell you, there is no flight available for you.
assistant
That's ok, thank you for your help.
user
Thank you for reaching us, have a nice day.
assistant