Air France is not my preferred carrier. I have flown with them a couple of times (only when I have to), but am always "surprised" about how the cabin crew don't want to speak English. Despite talking to them in English, they always seem to respond in French. My latest flight with AF was no different.
The cabin crew also were a bit grumpy. A smile costs nothing but can go a long way with passengers. I travel other airlines as well and the majority of crews will have a smile on their face.
In this case, I had a night flight so people try to get some sleep. About an hour before landing, breakfast was served. Instead of clicking on the dimmed lighting (allowing people to wake up smoothly), the cabin crew clicked on the full lights without warning (abruptly waking up everybody). Effective, but not customer oriented...
Overall, the airline itself is ok, but they could be more friendly towards their customers and realize they have a lot of international, non-French speaking passengers as well.