Hi.
user
Hello.
assistant
I am Carol Allen.
user
How may I serve you?
assistant
Reserve a direct flight from Austin, AUS to Philadelphia, PHL under 500 price range.
user
Sure, help me with the trip dates?
assistant
Ok, my trip dates are as 09/15 and 09/17.
user
There are no flights running in your preferred dates.
assistant
Ok, that's not a big problem. Thank you for the information.
user
Thank you for reaching us. Have a nice day.
assistant