You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: I want to meet my twin sister, could you book my ticket from DTW to ATL?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My itinerary dates are Aug 7 and Aug 9.

ASSISTANT: Can I know your name please?

USER: Donna Evans here.

ASSISTANT: Do you need any specifications?

USER: I need a connecting flight.

ASSISTANT: Sorry, there are no flights found in our database.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.