You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you for the day?

USER: Can you please help me with booking a flight ticket from LAS to MSP?

ASSISTANT: Can you please share your travelling dates?

USER: My travelling dates are from Feb 26-28.

ASSISTANT: Do you prefer class?

USER: I prefer economy class.

ASSISTANT: Do you need connection?

USER: I need a connecting flight.

ASSISTANT: May I know your name?

USER: Sure, Patrick Lee.

ASSISTANT: We found United Airline with fare 200 and flight number is 1004 with connecting flight. Shall I proceed with the booking?

USER: You can proceed with booking.

ASSISTANT: Your booking is done.

USER: Thank you for the help.

ASSISTANT: Thank you for choosing us.