Choose the right examples.
Pick one routine answer, one sales conversation, one complaint, one firm boundary and one conversation you are especially proud of. Remove private information, but keep your real phrasing, punctuation and rhythm.
Mark what matters.
Explain why each answer worked: short because the customer was in a hurry, direct because a price was fixed, or warm because the customer was worried. That turns style into a rule Kai can repeat.
A real answer with context is more useful than a page of brand adjectives.
Test before customers see it.
Run old conversations through the new voice. If Kai changes a fact, becomes too casual or adds promises, fix the rule and test again. Voice never overrides accuracy or approval limits.