You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be there for you?

USER: Can you help me to book a flight ticket from DEN to MSP?

ASSISTANT: Sure, on what dates are you looking for?

USER: My travelling dates are 09 and 11 of Feb.

ASSISTANT: How many connections do you need?

USER: I need a connecting flight.

ASSISTANT: Do you have any specifications?

USER: I prefer to travel in economy class.

ASSISTANT: May I know your name?

USER: I am Gary Wright.

ASSISTANT: We found an United airline with flight number 1020 going on your way with 1 connection and price 200. Is that fine?

USER: Please proceed to booking.

ASSISTANT: Your booking has been done in economy class.

USER: Thanks for helping me.

ASSISTANT: Thank you for choosing us.