Walking into the train you quickly glance back at your crying parents. Uhhg. You think. You sit down alone and a few others join you later. You order a few Bertie Botts every flavor beans and gag upon the Earthworm one.

You get out of the train and see floating wagons being pulled by........by air? Anyways, you hop in one and the few friends along with some strangers you made on the train join you. One of the strangers, gasps.
Stranger: Threstrals! I've never actually seen one until now, but my sister talks about them all the time!