You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you out?

USER: I am planning for the trip, so will you help me to book a flight ticket?

ASSISTANT: Yes, I am here to help you. May I know you trip dates?

USER: My travelling dates are 08/25 and 08/27.

ASSISTANT: Ok, please provide you location airport codes.

USER: The source airport is CO-DEN and the destination airport is MN-MSP. Please make sure with the connection limit is 0.

ASSISTANT: I found a flight, may I know your name?

USER: My name is Christopher Smith.

ASSISTANT: Sorry Smith, we cannot provide you the flight with 0 connection on your requested dates.

USER: It's ok, no problem.

ASSISTANT: Have a good day Smith.

USER: Thank you for the information.

ASSISTANT: Thanks for approach. You are welcome.