Hello.
Hello. How can I assist you?
I am Paul Collins, I want to attend science exhibition held at Philadelphia, PA - PHL. Could you please help me in booking a ticket?
Ok, please  provide me your journey dates?
My journey dates are on 12/18 and return on 12/20.
Ok, may I know your source point?
Sure, my source airport is Chicago IL - ORD.
Ok, please wait.
Ok.
 Sorry, no flights are available on your requested dates.
No problem.
Thank you for availing us.