What it is
A practical definition
Conversational recommenders work in rounds: the system gathers preferences, rebuilds the result set and explains why it picked what it picked.
Example in ecommerce
On a laptop page the assistant can ask about the use case, the budget and the must-have specs, then offer alternatives without sending the shopper back to search.
Business impact
Raises recommendation relevance, eases choice overload and improves conversion in complex categories.