We absolutely needed AAA batteries and Radio Shack was the nearest place that had them. I bought a 4 pack and the guy asked me "Do you also use AA batteries?" in an attempt to get me to purchase some of those as well.
I told him "No, I only use AAA batteries" and left with my purchase.
API.ai, originally known as Speaktoit, had some success with Assistant, which was downloaded more than 10 million times from the Google Play store
On September 19 2016, Google announced it had acquired API.ai, a startup that launched Assistant in 2011, one of the earliest independent virtual digital assistants (VDAs).
this from here