You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Joseph Lee.

ASSISTANT: How may I assist you today? Nice to meet you Lee.

USER: I want to travel from NC-CLT to NC-CLT for my brothers marriage, could you please book a ticket?

ASSISTANT: Sure, may I know your trip dates?

USER: My departure day is 06/26 and return day is 06/28. I need  0 connection limit and price limit is 200.

ASSISTANT: Sorry, I cannot find any flight with your connection.

USER: Thank you for your service.

ASSISTANT: Thank you, have a nice day!.