'Smoking or Non-Smoking' is a refence to common dialogue used when offering seating assignments, like at a restaurant. Or when offering someone something.
An example might be - 'Good evening Sir. You'd like a seat? Would that be in the Smoking or Non-Smoking section?'
Aa bit like, when you ask for a burger at Mc Donalds. They always (or used to) ask 'Do you want fries with that?'
I can't actually think of the exact dialogue placement in that scene but that's how I understand it.
All this Alien talk is interesting and an extended cut would be great. Anyone know of a site to look at known and unknown missing scenes?