You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Myself Jason Jones. I would like to take a flight from PHL to DCA, hope you are helping me with booking.

ASSISTANT: Sure, let me know your travelling dates.

USER: Ok, my planned dates are from Nov 17 to 19.

ASSISTANT: Can you please share your connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: Yes, I want to return in the afternoon time and as well as my departure time is also afternoon.

ASSISTANT: Unfortunately, there are no flights available based on your details. Thank you for choosing us.