What is Artificial Intelligence , History & Use of AI??

Many online websites offer online customer support in which the website answers the questions to help the user. But do you know that in many websites one person does not answer your questions, but on these sites, robots based on artificial intelligence work. Do you know that AI technology has been used for many years in many video games. Technology has changed a lot in the last few years. In which Artificial Intelligence technology works on the basis of the user's emotions, and the game provides different reactions.