Hello, I am Steven Harris.
user
Hello, how can I help you?
assistant
I want to attend a meeting in Washington, so could you please help me to book a flight from IAD to DCA?
user
Ok, can you please provide your travelling dates?
assistant
My preferable dates are from 06/17 to 06/19.
user
Sorry, no flights found as per your request.
assistant
Ok, thank you for the information.
user
Thank you.
assistant