@Narendra Mahendrakar (Microland) , Based on my understanding of your requirement, if you haven't checked, kindly checkout the "Chat with your data" solution accelerator is a GitHub repository offering a template for end-to-end RAG pattern implementation using the "Retrieve-then-read" interaction pattern.
The repository includes instructions on customization and usage to suit your specific needs. This solution accelerator combines the GPT model in Azure OpenAI Service with an Azure AI Search index generated from your data, integrating them into a web application to deliver a natural language interface for search queries. Kindly checkout this article: Introducing the “Chat with your data” solution accelerator – now available on GitHub