What Happens After You Catch Zapdos Articuno And Moltres On Pokemon Platinum?

Go to Valor Lakefront and talk the game designer guy and he'll give you a diploma thingie. Then go to Eterna City and talk to Professor Oak. He'll tell you about how to catch Ho-oh and Lugia.
Good Luck!

The game just continues as normal. .

Nothing. I checked and he just asked me about my pokedex and then he said to remember that pokemon evolve

Holey f***  oh my god thank you thank you thank you I love myself oh and thanks 4 the info about lugia I want that pokemon so bad ill trade my first born child 4 it! Well maybe my legendary crelilia oh and what house in enterna lol I don't remember

All three then do all the stuff them people said to do

Nothing happened. He just asked about my pokedex and told me to trade more