Concept behind these Virtual Assistance?

Question

Whenever I ask something from siri, cortana or google assistant, they accurately reply for questions, even in the language that I prefer, so what is the real concept behind this? Can anyone help me understand that? Thanks in advance!

Answer 1

Siri, Cortana and all these virtual assistance works based on the concept of NLP that is Natural Language Processing.

Now, how it works, just follow this video, it will provide you enough insights to NLP along with all its practical approach.