Chatbot training data now created by AI developers with NLP annotation and precise data labeling to make the human and machine interaction intelligible. This kind of virtual assistant applications created for automated customer care support assist people in solving their queries against product and services offered by companies.

Machine learning engineer acquire such data to make natural language processing used in machine learning algorithms in understanding the human voice and respond accordingly. It can provide the labeled data with text annotation and NLP annotation highlighting the keywords with metadata making easier to understand the sentences. Source