onena,
Are you joking?
Have you heard about?
- On line ticket booking? (cheaper than traditional travel agent or airline counter)
- Marketing campaigns? (You can't tell the deal between the two vendors involved)
- Restrictions applied after airline ticket is issued? (its nothing to do with the person who sold you the ticket, there are pre set conditions inherent to the ticket class you buy)

Sorry for being so harsh, but its somehow reflected in the naive words of your OP, that you are either joking or you are missing a huge chunk of many facts of today’s life!