Hello Larry Mitchell here.
user
Hello, what can I do for you?
assistant
Can you check is there any flight available from my location  ATL to IAD?
user
Sure, may I know your travelling dates?
assistant
My trip dates are from 08/23 to 08/25.
user
Sorry for the inconvenience, there is no flight available for you.
assistant
It's ok.
user
Thank you for approaching us.
assistant
Thank you.
user