MoP Flight Trainers

Once you hit 90, you're gonna want to pick up your flight training. Wisdom of the Four Winds is not available in Orgrimmar. To get the training you need to fly in Pandaria, you need to go to your faction's hub in the Vale of Eternal Blossom.

Skydancer Shun  is the Horde Trainer, located at the Shrine of Two Moons (62,32)
Cloudrunner Leng is the Alliance Trainer, located at Shrine of Seven Stars (84, 61)

I've marked it on the map below, red for the Horde trainer, blue for the Alliance Trainer.

It should cost 2,500 gold to purchase, rep with the Golden Lotus will lower the trainer cost, but you're not going to want to grind out the rep without flying to save 500 gold.