Since every application is specific and the development of a training set is usually proprietary, there’s few examples of “here’s what to do”, besides simply you must show the AI over and over how it should respond to the entire breadth of inputs you would provide, by training on examples like would actually be used and response desired.
I posted a topic to gather more data, given how little there is about fine-tuning, especially on top of chat models, without a lot of feedback.