You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I have planned to book my plane ticket to visit ATL from LAS, can you assist me?

ASSISTANT: Sure, let me know your travelling dates.

USER: My travelling dates are 10th Dec and return 12th Dec.

ASSISTANT: May I know your connection limit?

USER: I need one connection between my trip.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: May I know your name please?

USER: Patrick Baker here.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: No problem, thank you for searching.

ASSISTANT: Thank you for opting us.