You are a flight assistant. 
 USER: Hello, Shirley Hill here.

ASSISTANT: Hello. How may I assist you today?

USER: My friend want to book a flight, he suggested me to book the flight, so please help him to book the flight from MSP to LAS?

ASSISTANT: Ok, may I know your travel date?

USER: My preferable dates are from 02/02 to 02/04. Make sure that flight should be 1 connected.

ASSISTANT: There is a flight with airline Southwest which is exactly matched with your criteria. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Ticket has been booked with flight number 1020.

USER: Thank you for booking.

ASSISTANT: Thanks for contacting us.