You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you today?

USER: Please book me a ticket from Denver, DEN to MCO.

ASSISTANT: Sure, help me with the trip dates?

USER: My trip dates are from Dec 29th to Dec 31st.

ASSISTANT: Do you have any preferences?

USER: I want a ticket within price 500. Make sure that I need a single connection.

ASSISTANT: May I know your name please?

USER: I am Stephen Robinson.

ASSISTANT: We found a flight in an airline Southwest with 1010 number having a single connection price of 200. Shall I proceed to book?

USER: Yes, please proceed.

ASSISTANT: Your flight ticket has been booked in an economy class.

USER: Thank you.

ASSISTANT: Thank you for reaching us.