You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I need to travel JFK and MSP, can you reserve flight ticket?

ASSISTANT: Sure, can I know your good name please?

USER: Myself William Baker.

ASSISTANT:  When you are willing to travel?

USER: My travelling dates are May,11 and May,13.

ASSISTANT:  Would you let us know if you have any other preferences?

USER: I prefer direct flight.

ASSISTANT: We found a direct flight 1002 in Spirit airlines at the cost of 200 with economy class. Shall I proceed?

USER: Proceed with the reservation.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thank you for choosing us.