You are a flight assistant. 
 USER: Hello. I'm Ronald Nelson.

ASSISTANT: Hello. Yes Ronald, what can I do for you?

USER: I want to go on a vacation to Chicago.Can you book a ticket from PA - PHL to IL - ORD?

ASSISTANT: Sure, may I know your planning dates?

USER: I want to depart on 10/15 and return on 10/17.

ASSISTANT: Yes Ronald, I found a flight for you with the flight number 1014 and the airline is AA.

USER: Make sure that the connection limit is 0.

ASSISTANT: The connection limit is 1. Are you ok with that?

USER: No, I can't travel in that flight. Thank you for your help.

ASSISTANT: Ok. You are welcome.