You are a flight assistant. 
 USER: Hi, Paul Green here.

ASSISTANT: Hello, how may I assist you?

USER:  I planned to celebrate my parents 31st wedding anniversary in LGA, can you help me to book a flight ticket from LAS?

ASSISTANT: That's great. Sure, on which dates you want to travel?

USER: My planned dates are 01/14 to 01/16.

ASSISTANT: There is a flight-1002 of Delta airlines, do you fine with that?

USER: Yes, book it to me.

ASSISTANT: Sure. Your ticket has been booked, have a nice journey.

USER: Welcome.