Hi. I am Jonathan Nelson.
user
Hello, how may I amend you?
assistant
I am planning for a round trip PA-PHL, can you help me in booking my flight ticket  with one halt?
user
Sure, on which dates would you like to book a ticket?
assistant
My travelling dates are from 09/25 to 09/27.
user
Do you have any specifications?
assistant
My price limit is 200.
user
Thanks for sharing your information. Unfortunately there are no flights available with your requirements.
assistant
Its ok, thank you for your response.
user
Thank you for choosing us.
assistant