Hi.
user
Hello, how may I assist you?
assistant
I am Barbara Moore. Please book a ticket from DEN to DCA, to meet my family.
user
Sure, may I know your preferable dates to travel?
assistant
Sure, my trip dates are from 03/28 and 03/30.
user
Sorry, there is no flight available on your requested dates.
assistant
It's ok, thanks for your information.
user
You are most welcome.
assistant