You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Gregory Adams. I am planning to visit ATL, so I want to book a ticket from PHL, can you help me in booking?

ASSISTANT: Sure, may I know your journey dates?

USER: I am departing on 05/28 and return on 05/30. Make sure the connection limit 1.

ASSISTANT: Sorry, there is no connecting flight on your given dates.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for reaching us.