In the rapidly evolving landscape of customer service, the advent of artificial intelligence has heralded a new era of efficiency and personalization. Virtual Assistants, powered by sophisticated Conversational AI technologies, are at the forefront of this revolution, offering unprecedented opportunities to enhance customer interactions. Virtual Assistants help streamline the process of service delivery and significantly enhance the customer experience by providing quick, relevant, and context-aware responses. As businesses increasingly turn to digital solutions to meet the growing demands for efficiency and effectiveness, understanding and implementing advanced voice and text bot technologies has become crucial. To highlight this shift, it’s important to examine specific applications where these technologies are delivering tangible benefits. In particular, call steering and FAQ systems demonstrate how Natural Language Understanding (NLU) and Large Language Models (LLMs) are reshaping business operations. This document explores the processes involved in developing voice bots for call steering and FAQ solutions using NLU and LLMs. It addresses key approaches, challenges, best practices, and the future potential of these technologies in these two critical use cases.