You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Can you please book a ticket from DEN to ATL? As I'm planning to visit Atlanta.

ASSISTANT: Sure, we are here to help you. May I know your planned journey dates?

USER: Sure, my planned departure and return travel dates are 2nd and 4th of Jan.

ASSISTANT: Do you need any break in your journey?

USER: I prefer single connected flight.

ASSISTANT: May I know your airline preference?

USER: I'm ok with any airlines.

ASSISTANT: Do you have any other requirements?

USER: I want to depart in the afternoon time.

ASSISTANT: May I know your name please?

USER: My name is Eric Hill.

ASSISTANT: Sorry to inform you that, there are no flights available with your requirements.

USER: That's ok, thank you for giving the information anyways.

ASSISTANT: Thank you for choosing our services.