You need to keep an eye on your snippets, as both Google Home and Google Assistant have been shown to read the most prominent snippets to provide answers to voice queries.
While there's nothing set in stone about snippets, there fax lists re several techniques that can help you achieve top rankings in voice searches:
Provide answers to specific questions: so you place the question in the H2 and give the answer directly in the body of your article.
Provide simple and concise answers to questions: Google will always reward answers that are given in list form in snippets, but remember to use language appropriate for your audience.
Make headlines compelling: Everything on your page should be optimized, from your title to your meta descriptions, and the more catchy and humorous your title is, the better.
Keep in mind that voice searches are more conversational than anything else. Try providing answers this way as well.