[kuyda]

How would you call it then? It's an app that mimics a friend that knows a lot about restaurants - I believe that can be called AI. However we used AI in the title just to make it easier to understand what we do. We sometimes just say it's a mobile app that gives you restaurant recommendations in a chat interface.

[petercooper]

Things like this would more formally be called 'agents', software agents, or intelligent personal assistants (which are a type of agent).

However, I think AI is perfectly acceptable in common usage nowadays. Some people will just get caught up with the 'formal' definition, but the media and, increasingly, consumers are just using the term "AI" now anyway.