Yes, style transfer with a “few shot prompt” works very well.
Ref vector databases, it is a newish approach to storing info - which can be searched semantically and the search results used to generate AI content.
I am currently beginning testing this approach for auto generating a specific subset of business email responses by referring to the vectorized business knowledge base.
This is quite an interesting video exploring using Open AI with Pinecone vector database: Beyond Semantic Search with OpenAI and Pinecone - YouTube