You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Can you please help me to search a flight with 0 connection limit?

ASSISTANT: Sure, can you please provide me your trip dates?

USER: The trip dates are 10/05 to 10/07.

ASSISTANT: Ok, let me know your preferred airport codes.

USER: The airport codes are from CO-DEN to CA-SFO.

ASSISTANT: May I know your name?

USER: Sure, my name is Nicholas Wilson.

ASSISTANT: Sorry Wilson, there are no flights available on your preferred dates.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for choosing us and have a nice day.