You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want the flight with 0 connection limit.Can you please help me out?

ASSISTANT: Sure, may I know on what dates are you planned to travel?

USER: The planned dates are from 09/26 to 09/28, I want to spent whole day in Houston on 09/27.

ASSISTANT: Ok, can you provide the airport codes?

USER: The airport codes are from CO-DEN to TX-HOU.

ASSISTANT: May I know your good name please?

USER: Sure, my name is Jerry Carter.

ASSISTANT: Sorry, there is no flight available in this route with 0 connection.

USER: No problem, I will search with another flight.

ASSISTANT: Thank you for approaching us.

USER: Thank you for your help.