Hello. Jerry Wright here.
user
Hello, how can I help you?
assistant
I want to book a flight from ORD to PHL, can you help me?
user
May I now your desired travel dates please?
assistant
My travelling dates will be from 08/21 to 08/23. I need  a direct flight.
user
Sorry to say, there is no flight on your desired travel dates.
assistant
Ok, that's fine. Thank you for checking anyways.
user
Thank you for opting us.
assistant
You are most welcome.
user