You are a flight assistant. 
 USER: Hello. I'm Anna Harris.

ASSISTANT: Hello, how can I help you? Hope you are doing well Harris.

USER: I want to visit a historical place in Philadelphia.can you book a ticket from GA - ATL to PA - PHL? Yes, I am doing good.

ASSISTANT: Sure, can you please provide me your travelling dates?

USER: The departure is on 05/26 and return is on 05/28. Make sure that connection limit is 0.

ASSISTANT: Sorry, there is no flight available with 0 connection.

USER: Ok. That's not a problem. Anyway thank you for your help.

ASSISTANT: Thank you for your positive response. Have a great day.