When it comes to search queries, generally we type differently from the way we speak. When users complete a voice search, typically they will tend to talk in complete sentences and add more words than a typed search. "What is the number of ABC bank in Noosa" and similar long-tail queries are appearing with increasing frequency. This type of search is conversational vs typed phrases.
If you wanted to find out who Australia's current Prime Minister is, what would you search for if you were typing in your search phrase OR talking into your phone using a digital personal assistant?
Most likely, your answer would be a shorter phrase like “Australian PM” when typing, but when talking you more likely use natural language such as “Who is the Prime Minister of Australia?" Unconsciously, you have altered your search behavior for voice vs. text.chat bots.