Mando knew this question was coming, and he's actually thought over how to answer it. Riz is easy for this; he's too young to think much about the future, or even remember the future he's building when he's the correct age. But Boober doesn't know anything yet, and it's in his nature to worry.

"You're going to do so well." Mando's voice is warm and affectionate. "You're going to have a job you love, and you're going to help so many people and Pokemon with it."