You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Can you help me in booking a flight from DEN to MSP?

ASSISTANT: Sure, can you share your trip dates?

USER: I like to travel on Dec 19 to 21.

ASSISTANT: May I know your name?

USER: I am Nicole Lewis.

ASSISTANT: Do you have any specifications?

USER: I prefer to travel in single connection flight.

ASSISTANT: There is a connecting flight with number 1016 in airline Southwest, the fare is 100 in economy class.

USER: Proceed for booking. Thank you.

ASSISTANT: Your ticket is reserved.

USER: Thank you very much.

ASSISTANT: Thank you for opting us.