Hello.
user
Hello, how may I assist you for  the day?
assistant
I am Linda Scott from Philadelphia. I am planning to conduct a free medical camp in Austin, so please book a flight ticket from PA - PHL to TX - AUS.
user
Sure, we are rapturous to help you. Can you please let me know your journey dates?
assistant
My departure day is 06/03, return day is 06/05.
user
How much you can spend for airfare?
assistant
My price limit is 200.
user
Ok, please wait for a while.
assistant
Sure.
user
Sorry we did not find any flights matching your criteria.
assistant
No problem, thank you.
user
Thank you for choosing us.
assistant