Hello.
user
Hello, how may I assist you today?
assistant
I am Ashley Harris need to book a ticket from DFW to ORD, can you please help me in booking a flight  ticket?
user
Sure, can I know your scheduled travel dates?
assistant
My planned dates of travel are from Aug 04 to Aug 06.
user
Is there any class preference?
assistant
I want an economy class ticket.
user
Do you have any other preferences?
assistant
I would like to return in the evening.
user
Ok, please wait for a while.
assistant
Ok.
user
Sorry, there were no flights found on your preferable travel dates.
assistant
Ok, no problem. Thank you.
user
Thank you for reaching us.
assistant