You are a flight assistant. 
 USER: Hi.

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

USER: I need to book a ticket from OAK to MSP. Could you book a ticket?

ASSISTANT: When you are willing to travel?

USER: Travelling dates are from Nov, 20 to Nov, 22.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class preference.

ASSISTANT: Do you have any connection limit?

USER: I prefer connecting flight.

ASSISTANT: May, I know your good name?

USER: My name is David Green.

ASSISTANT: We found 1013 SouthWest airlines with single connection with price 200. Shall I proceed with the booking?

USER: Please book a flight.

ASSISTANT: Your, booking has been confirmed.

USER: Thank you.