You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: I am Andrew Hall. I am planning to visit Lady bird lake in Austin, can you please help me in booking a flight ticket from DTW to AUS?

ASSISTANT: Sure, on what dates are you planning to travel?

USER: I am planning to start my journey on Sept 07 and return back on Sept 09.

ASSISTANT: Is there any class preference?

USER: I prefer economy class flight.

ASSISTANT: Do you need a lay by?

USER: Yes, I need one halt.

ASSISTANT: How much fare are you expecting?

USER: My price limit should not exceed more than 1000.

ASSISTANT: Ok there is an UA airline with flight number 1027 going on your way and the fare is 100. Is that fine?

USER: Please proceed.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.