To conduct this test we need two people and one machine. One person will be an interrogator (i.e.) questioner, will be asking questions to one person and one machine. Three of them will be in a separate room. Interrogator knows them just as A and B. so it has to identify which is the person and machine. The goal of the machine is to make Interrogator believe that it is the person’s answer. If machine succeeds by fooling Interrogator, the machine acts like a human. Programming a computer to pass Turing test is very difficult.