The purpose of this research is to demonstrate how a Voice Command System is implemented. The primary input of a user's voice is used in this method. We were able to convert voice as an input to text with speech to a text engine. The resulting text is used to process questions and collect relevant information. After collecting the information, it was converted to speech using speech-to-text and the correct output was delivered to the user. This research has realized a public API based speech recognition system with Raspberry Pi and USB microphone as hardware and several python programming languages. Osun State Polytechnic Iree has many different offices and lecture halls and the directory is done by signposts and asking people around the campus and there has been a great problem as some signposts have fallen off. While the signposts can only give a directive to buildings, it can't give the directive to offices inside the building and some visitors get embarrassed by the way they are replied to, some may be given the wrong direction while some may not get being replied at all. These prompts to design a system that gives visitors direction to offices and lecture rooms in Engineering building. The research covers the hardware specification of the speech recognition system and also maps an application of public speech APIs and shows a realization using appropriate hardware.