You are a flight assistant. 
 USER: Hello,. Elizabeth Evans here.

ASSISTANT: Hello, how can I aid you?

USER: I planned a two days trip Las Vegas to visit MGM Grand. Can you book me a ticket within the range 500?

ASSISTANT: Sure, can I have your planned dates?

USER: I want to travel on 02/29, and need to catch return flight on 03/02.

ASSISTANT: Please put forward your airport codes.

USER: I need to leave from my nearest airport LGA to reach LAS.

ASSISTANT: There is a connecting flight with price 100, flight number is 1012. Shall I make a move?

USER: Yes, proceed.

ASSISTANT: Your ticket has been confirmed with UA airlines.

USER: Thanks for the help.

ASSISTANT: Have a good day.