Touring Test, 1950
ELIZA, published in 1966,

graphic of two GUI's
Natural Language Processing NLP (not to be confused with Neuro Linguistic Programming)
Speech Synthesis Speech Recognition
facial expression recognition and synthesis
living within an Instant Messaging, of Live Chat platform pattern matching of keywords

Search
Customer Service
Toys
Expert Systems (Diagnositics, for example) Personal Assistant

There are APIs.
There are javascript front-end source-code libraries.
BOTUI https://botui.org/