Restricted Turing Test
Because restricted Turing tests—which limit conversation to a single topic, e.g. 'women's clothes' or 'cars'—are much easier to pass, they provide a feasible short-term goal for AI researchers to work toward.
"Such tests are useful because they test a computer's conversational ability without requring it to demonstrate the vast amount of knowledge required to engage in unrestricted conversation."
Epstein, Robert (1992). "The Quest for a Thinking Computer." AI Magazine.