Japanese tech companies NTT Communications Corp. and SoftBank Corp. are developing systems utilizing artificial intelligence to help call-center workers deal with abusive customers. NTT Communications has created a call center support system that can monitor exchanges between customers and workers and display examples of appropriate responses on operators’ screens. In a demonstration open to the media, a prototype system offered an operator an example response to a customer complaint about a telecom contract. After the operator replied to the customer in line with the advice, it tagged the res…