Hi.
user
Hello, how can I aid you for the day?
assistant
I am Patrick Carter. I am planning to travel from DCA to BOS, help me in booking a flight?
user
Sure, I am here to help you with that. Can you please share your preferable travel dates?
assistant
My travelling dates are Sept 03 to 05.
user
Do you have any particular time for departing and returning?
assistant
I want to return in afternoon flight.
user
May I know your connection limit?
assistant
I need direct flight.
user
Do you have any other specifications?
assistant
No.
user
There are no flights found on this route as per your travel dates.
assistant
That's ok, thank you.
user
Thank you for reaching us, have  a great day.
assistant