You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Iam Samuel White. I would like to visit Denver on business trip. Will you please help me to get a flight ticket?

ASSISTANT: Sure Samuel. May I know your source and destination airport codes?

USER: My airport codes are NC-CLT and CO-DEN.

ASSISTANT: Will you please provide your travelling dates?

USER: My trip dates are 04/08 and 04/10.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Thanks for waiting. As per your request the flight is available. The flight number is 1017 with price 500 and the connections 0. Are you OK with this?

USER: No, I want single connection please.

ASSISTANT: Sorry to say that Samuel, there is no flight available with connections 1.

USER: OK, please don't book it.

ASSISTANT: Thanks for reaching us. Have a nice day.

USER: Your welcome.