[tikhonj]

I work in an open office and grabbing a room with somebody is totally normal—it happens every day, for all sorts of boring reasons. We even have small rooms perfect for this purpose: three or four chairs and no tables or video conferencing equipment. People use them for anything from random conversations (technical or not), personal phone calls or even just a bit of extra privacy and quiet for solo work.

Personally, I've been very happy with the environment. It helps that the open part of the office is bright, quiet and pretty sparsely populate.