You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Melissa Martinez. I would like to book a flight ticket from DEN to MSP, can you please help me?

ASSISTANT: I am happy to help you, on which dates you are willing to travel?

USER: Sure, my travelling dates are Nov 26 and Nov 28.

ASSISTANT: May I know your connection limit?

USER: I need a direct flight.

ASSISTANT: Sorry, there is no direct flight found on your route.

USER: That's ok, thank you for your information.

ASSISTANT: Thanks for choosing us, have a good day.