Originally Posted by
orbitmic
The vast majority of cheap tickets (of which N is likely to be one) with both AF an all other airlines I know of are non-transferable or only transferable with huge penalties. To know whether your cousin has been exceptionally lucky and got a ticket which is transferable one would need to look at the actual ticket conditions, which he must have received (from AF or from his TA) or which could be retrieved from the full booking code (there are hundreds of different fares booking into bucket N so one would need something like NKXP16US or NKXB67US etc
Most airlines don't allow name change at all. This is the case with KL/AF, so even on a expensive ticket you would not be able to change the name. Only canceling the ticket and buy a new one would work then.