Hello.
user
Hello, how may I help you?
assistant
I am Ryan Roberts, want to travel from DCA to ORD. Can you book my ticket?
user
Sure, may I know your travelling dates?
assistant
My travelling dates are from 10/01 to 10/03.
user
Sorry Roberts, there is no flight available as per your requested dates.
assistant
That's fine, thank you for your help.
user
Most welcome.
assistant