You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: I need to travel from DEN to MSP, can you help me in doing that?

ASSISTANT: Sure, may I know on what dates you prefer to travel?

USER: My journey dates are Oct 29 to 31.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: I am David Smith.

ASSISTANT: Are there any other specifications?

USER: I prefer economy class to travel.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for connecting with us.