Hello.
user
Hello.
assistant
My name is Carol Jackson.
user
How can I assist you?
assistant
Can you please help me  to book a flight ticket  from IAD to DCA?
user
Sure Carol, can I know travel dates please?
assistant
My departure and arrival dates are 08/02 and 08/04.
user
Ok, wait a moment please.
assistant
Ok.
user
Sorry, there are no flights available on your dates.
assistant
It's ok, thank you for checking.
user
Welcome.
assistant