[Somehow that answer doesn't surprise Cilan at all.]

Well, knowing you, I'm sure you'll be able to accomplish that! After all, you've already done so much during your journey, so I suppose it would only be a matter of time until you'll have met every type of Pokemon there is to see, and likely befriended more than half of them by then.

[It's always impressed him how you've been able to make so many friends, even during the time they spent traveling together, so he has no doubt in his mind that you're probably going to make even more friends as soon as you leave this place.]