You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you please help me with booking a flight ticket from MSP to ORD.

ASSISTANT: Sure. Let me know your travelling dates.

USER: My travelling dates are 12/20 and 12/22.

ASSISTANT: Do you have any preference?

USER: Yes, I prefer to travel in a business class.

ASSISTANT: Can I know your name?

USER: I am Stephanie Lewis.

ASSISTANT: Connecting flight can be booked with airline Southwest for price 900 having flight number 1011.

USER: You can proceed with booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for your assistance.

ASSISTANT: Thank you.