Hello.
user
Hello, how may I help you?
assistant
I am Michelle Allen, want to travel from DCA to ORD. Please help me.
user
Sure, may I know your trip dates please?
assistant
My trip dates are from 09/15 to 09/17.
user
Please wait for a while.
assistant
Ok.
user
Sorry Michelle, there is no flight available as per your request.
assistant
It's ok, thank you.
user
Most welcome.
assistant