Variant Email Templates In Email Assist

I have a request from a customer to be able to use (for example) the language variant when using email assist. In testing this it appears that it always defaults to the first in the list (English) when sending out. They'd like the email sent out to a contact outside the US to receive the email in the local language similar to the way that Co-pilot works. At this time it looks like they'd need to create a template for each language.