You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I want to book a flight ticket from SFO to PHL. Could you help me in booking?

ASSISTANT: Sure, can I know the travel dates please?

USER: My travelling dates are from Nov 16 - 18.

ASSISTANT: Do you have any requirements?

USER: I prefer for connecting flight.

ASSISTANT: May I know your name please?

USER: Justin Wilson.

ASSISTANT: Sorry, there are no flights available as per your request.

USER: That's ok, no problem.

ASSISTANT: Thank you for approaching us.

USER: Thank you.