Will you give me the slides you used in a recent presentation?
I don't usually give away the slide decks I've created for my business.
Instead, if you attended a workshop or course, you should have received a detailed handout with not only key slides from the presentation but also plenty of how-to text and other details. This material is more useful than my slide decks, because my slides often don't have text.
In addition, if you attended an online workshop, you have access to a recording of the entire session.
If you just want to use a few slides in your materials, please see this question.