The modern Era is a boon to humanity with ever-changing technology, which makes it possible to do the things that can make our world smart and sustainable. God is a great creator, and along with so many variations, he has also created people with a unique abilities. Accidently or eventually, due to old age, a healthy person may be helpless and then suffer from depression due to sustainability issues in this fastmoving and emotionless world. However, with cognitive computing technologies and machine learning, Artificial Intelligence (AI) is a miracle specifically in the form of Virtual Personal assistants. Many instances are available in the recent literature about the same. This chapter presents a simple, mobile-based user-friendly application that can be operated with a multi-lingual voice signal to enable the person to perform regular tasks. This concept gives an intelligent platform to automate our tasks with ease, comfort, and accuracy. The idea of a smart and sustainable world motivated us to develop a Personal Helper with brilliant intelligent powers, interacting with the objects in our surroundings, mobile services, and PC services just by one human voice. The hardware device receives the audio request through a voice input device like a microphone. The proposal is then processed so that the device can execute the task. The primary objective of the virtual assistant is to help the disabled, specially-abled people, do their work by giving single voice commands in their natural voice. The chapter demonstrates the concept of significantly reducing impaired or elderly persons' physical efforts and living a 'smart' quality life.