Route 1
When you get close to Route 1, Bianca will call you over. She will suggest that the three of you take your first steps on your journey together. You will walk up to Prof. Juniper and she will explain that when you see a Pokémon, it's data is automatically recorded on the Pokédex. However, only by catching the Pokémon will you obtain the full data. She will then walk into the long grass behind her in order to show you how to catch a Pokémon.
Juniper will send out her Level 7 Minccino to battle a Level 2 wild Patrat. The Minccino will attack the Patrat, bringing it's HP into the red zone. She will then navigate through the menus and select a Poké Ball. She then captures the Patrat successfully. Juniper will then give each of you 5 Poké Balls to catch Pokémon with. Juniper will then head off to Accumula Town, inviting you to follow. Bianca then sets everyone a challenge: whoever catches the most Pokémon by the time they reach Accumula Town wins. Cheren and Bianca then depart, leaving you to traverse Route 1 alone.