Voice Assistant applications are preferred to be designed with some form of personalization to enhance user experience. However, the question remains that what is the kind of Voice Assistant that users would prefer. As part of this research we tried formalizing the notion of naturalness and humanlike in the context of voice assistants by defining its optimal personality, creating guidelines for natural dialogues and expressions. We decomposed the design problem into four aspects, communication style, personality, speech or dialogue, and appearance along with non-verbal gestures. To investigate on each of these four aspects, we performed four different user elicitation techniques.