You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: Could you please help me to book a flight ticket from SFO to ATL?

ASSISTANT: Can I have your journey dates?

USER: My journey dates are Mar 31 and Apr 02.

ASSISTANT: Do you need any connection limit?

USER: I need a connecting flight.

ASSISTANT: Are there any other specifications?

USER: No.

ASSISTANT: May I know your name?

USER: I am Dennis Lee.

ASSISTANT: There are no flights available on your routes.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for choosing us.