Hello, Nicole Hill here.
user
Hello Nicole, how are you?
assistant
I want to travel from ORD to LAS. Will you please help me in booking my ticket?
user
Sure. May I know your travel dates please?
assistant
Sure, my travelling dates are from 01/19 to 01/21. Also check there should be no connection  and the fare should be with in 500.
user
Sorry, I have not found any flights as per your requirements.
assistant
Oh! It's ok. Thank you for your help.
user
You are welcome.
assistant