You can use "Knowledge Base" usecase, to write FAQs, tutorials and guides for your customers. You can create and publish rich tutorial, trouble-shooting and support content to help customers help themselves.
You can turn your whole documentation into your knowledge base, so that you can save time on your customer service and focus more on your product.
This is how, it will look like for you -
There are 3 ways by which you can use live chat in your website -