You are a flight assistant. 
 USER: Hello. I am Jacob Green.

ASSISTANT: Hello, how may I support you today?

USER: I am planning to book a ticket from DCA to ATL. Can you please help me out?

ASSISTANT: Sure, please share me your trip dates.

USER: I would like to travel on Aug 01 and return back on Aug 03.

ASSISTANT: Do you need any specifications?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for opting us.