You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I would like to book a ticket from DFW to ATL, can you please help me out?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: I am travelling on these dates May 27th and 29th.

ASSISTANT: Can you please share your connection limit?

USER: I need single connected flight.

ASSISTANT: May I know your name please?

USER: Edward Robinson here.

ASSISTANT: Do you have any other specifications?

USER: I don't have any other preferences.

ASSISTANT: Edward Robinson, there are no flights available in your route.

USER: Ok no problem, thank you for checking the flights.

ASSISTANT: Thank you for choosing us.