You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I want to book a flight ticket in economy class. Can you book a flight to St.Paul?

ASSISTANT: Sure, to book a ticket may I know when you are willing to travel?

USER: I will travel on Mar 25 and return on Mar 27.

ASSISTANT: Can you please forward your airport codes?

USER: My source point is MSP and my destination is CLT.

ASSISTANT: Please provide your name.

USER: My name is Kathleen Hill.

ASSISTANT: There is an airline called Southwest of flight 1006 in an economy class with flag stop. Can I proceed with the booking?

USER: Please proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us.