Apple has purchased VocalIQ, a startup located in the United Kingdom that has developed a natural language API to allow computers and people to have a more natural dialogue, reports Financial Times. According to VocalIQ’s website, the company has developed a self-learning dialogue API built on 10 years of natural language research, belief tracking, decision making, and message generation.

Siri is becoming an increasingly important part of how people interact with Apple’s devices and operating systems.