You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Helen Allen.

ASSISTANT: How can I help you, Helen?

USER: I want to travel from New York to Las Vegas for a business trip.Can you please help me for booking a flight ticket?

ASSISTANT: Sure, please provide me the airport codes and your travel dates.

USER: My origin airport code is NY-EWR and destination airport code is NV-LAS. My departure date is 01/27 and return date is 01/29. Make sure my price limit is 1000 and the connections limit is 1.

ASSISTANT: There is a flight with number 1008 from AA airline. Shall I proceed for booking?

USER: Please proceed for booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us.