Sarah Franklin, Chief Executive Officer of Lattice, and Francine Katsoudas, EVP and Chief People, Policy and Purpose Officer at Cisco, speak at Fortune's COO Summit with Kristin Stoller, Editorial Director at Fortune. (Credit: Kristy Walker/Fortune) Three years ago, Cisco piloted an AI agent designed to analyze employee communications and diagnose the root causes of workplace conflict. It never made it out of the test phase. Why?