https://www.techradar.com/news/lg-rolls-out-google-assistant-to-all-of-its-2018-oled-and-super-uhd-tvs

Right before the start of Google IO 2018, LG announced that Google Assistant would finally be available on its 2018 webOS TVs. 

Google Assistant, the AI smart assistant that lives on a number of different smartphones, headphones and Android TV devices, enables smart home controls and language commands - all of which you’ll be able to control using the microphone in your remote.