Engaging Customers with AI in Online Chats: Evidence from a Randomized Field Experiment

We examine how artificial intelligence (AI) affected the productivity of customer service agents and customer sentiment in online interactions. Collaborating with a meal delivery company, we conducted a randomized field experiment that exploited exogenous variation in giving agents access to AI-generated suggestions. We found that AI improved both the efficiency and effectiveness of the interactions: AIassisted agents responded faster, engaged customers more deeply, and achieved greater improvements in customer sentiment. The benefits were most pronounced for less-experienced agents. However, AI's impact varied by conversation type: It improved efficiency and customer sentiment in subscription cancellation requests but was the least effective in repeat complaint scenarios because of systemic issues beyond the AI's capability. A text analysis of agent message suggests that improved customer sentiment was explained by AI-assisted agents exhibiting higher levels of key response characteristics: empathy, information, and solution. Furthermore, we exploit a unique data feature: Customers first chatted with an automated chatbot without any human intervention before they were transferred to human agents (who may or may not have had AI assistance). We found if customers who had experienced chatbot comprehension failures were then connected to AI-assisted human agents, the involvement of AI negatively affected customer sentiment. This is because unusually rapid responses in the latter scenario led customers to believe they were still communicating with a chatbot only, suggesting a spillover from their initial negative chatbot experiences. Companies should understand the conversation contexts, such as customer intent and chatbot interactions, when integrating AI into their customer support strategies.