You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you today?

USER: Can you help me to book a afternoon flight from my origin airport?

ASSISTANT: Sure, I will help you with that. Please, share me your journey dates?

USER: My travelling dates are Jan 12 and 14.

ASSISTANT: May I know your nearest airport codes?

USER: My preferred airport codes are ATL and DFW.

ASSISTANT: Do you have any connection limit for your journey?

USER: Yes, I want a break in my journey.

ASSISTANT: May I know about your other specifications, if any?

USER: No.

ASSISTANT: Let me know your name to proceed further.

USER: My name is Katherine Lee.

ASSISTANT: Sorry to say that, we have not found any flights running on your desired routes.

USER: No issues, thank you for your time.

ASSISTANT: Thank you for reaching us, have a good day.