I wouldn't bet on that vulindlela when you travel in Asia. The ball game is totally different. Always have point to point even if it means pain.

I had one ground staff in CAN who wanted to confiscate my inbound coupon because I did not use it. According to her, the tickets comes in pair. Trying to explain ZED=sector to her was a zero. Checking with the ticket office yielded a correct answer, i.e. each is a coupon but to save pain, I flew out of HKG instead.

In Asia, its totally different. If you are not paying full fare, don't expect them to be helpful!