You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Laura Moore here. I want to attend a Marriage in Minneapolis. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, can I know your airport codes please?

USER: My airport codes are DEN and MSP.

ASSISTANT: May I know your trip dates please?

USER: My travelling dates are 01/27 and 01/29.

ASSISTANT: Do you have any other requirements?

USER: I want to return on evening.

ASSISTANT: Ok, please wait for a while.

USER: Ok, I need single connecting flight.

ASSISTANT: Sorry, we regret to inform you that there is no flight available as per your request.

USER: Anyway, thanks for the information.

ASSISTANT: My pleasure.