You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jonathan Allen.

ASSISTANT: How can I assist you?

USER: I am planning to book a ticket to attend a meeting at DC-IAD. Can you please help me out to book a ticket from NC-CLT?

ASSISTANT: Sure Allen, can I know the travel dates please?

USER: I would like to travel on 02/20 and return back on 02/22.

ASSISTANT: Ok, wait a moment please.

USER: Make sure my connection limit si 0.

ASSISTANT: Sorry, there are no flights available as per your request.

USER: That's fine.

ASSISTANT: Thank you for approaching us.

USER: Thank you for your service.