You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Please help me in booking flight ticket from PHL to ATL.

ASSISTANT: Can I know your travelling dates?

USER: My trip dates are Apr 09 to Apr 11.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any other requirement?

USER: My depart should be in the afternoon.

ASSISTANT: Let me know your name?

USER: Joseph Lewis here.

ASSISTANT: Sorry currently there are no flights for your travelling dates.

USER: Ok, no problem.

ASSISTANT: Thank you.

USER: Thank you for checking.