FWIW, when I flew Air Algerie for 3 different domestic flights, assigned seats did not matter. It was take any available seat regardless of what your ticket said.
This made for some very interesting situations when I tried to get a local to get up because I was assigned to sit next to his wife..**awkward**.
For reference: ALG-GHA, GHA-ALG, and CZL-ALG
A great solo travel tip spotted this week on One Mile at a Time.
