Conversational AI Bots with Emotions

Can we add some Emotions to Bots? According to the collins dictionary, "An emotion is a feeling such as happiness, love, fear, anger, or hatred, which can be caused by the situation that you are in or the people you are with." So, when I speak with my Robot, I expect good responses with emotions based on the conversation that happened between me and the Bot. To achieve this, either we should create an Artificial Brain or identify and respond with appropriate words. Artificial brain research is going on in most of the world-famous AI labs.