You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Michelle Baker.

ASSISTANT: How may I assist you?

USER: I need to book a direct flight. could you please help me?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: Sure, my travelling dates are Sep 11 and Sep 13.

ASSISTANT: How much can you can spend for airfare?

USER: I can pay up to 5000 for a flight ticket.

ASSISTANT: May I know your airport codes please?

USER: Sure, my airport codes are MSP and AUS.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: Delta airlines is available in your route with the ticket fare of 200, shall I proceed with the booking?

USER: If it is a direct flight, proceed with booking.

ASSISTANT: Your ticket is booked with the flight-1007.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.