According to estimates, the number of AI enabled device users will reach 1.8 billion by the year 2021, and the market of virtual digital assistants will grow to $15.59 billion in 2021. A survey also finds that most consumers use it for communication, browsing the Internet, listening to music, finding weather forecasts, or traffic updates. However, as integrations with cars, smart devices, operating systems, and mobile applications increase, virtual assistants would take on a more central role in areas such as retail, education, healthcare, and communications where uses for the speech recognition technology is expanding year-on-year.