Account Specific Knowledge Base or Article?

Account Specific Knowledge Base or Article?

We often have Clients email for the same thing again and again. For instance, they may want a report that we generate for them about their specific system. 3 months later when they've lost it they emails us again for the same report.

I see that we can assign a knowledge base article either to all users or only registered users.

is there a way to only assign it to a specific account? So that when they email us we just refer them to their knowledge base?

Thank You