title says it all ;) (but make the answer as detailed as possible, no links plz)
1.Get a Pokemon with flame body (e.g Talonflame)
2.Use hatching power.( from O powers)
3.Ride your bike around lumiose city.
Those are all the things I can think of.
Hope I helped!
You can try and get the Oval Charm + Hatching Power :3
and get a Coin/Blu-Tak and ride at the centre of Lumiose City