Google is rolling out "over the coming months" an easier way to pull up information when you're on Android Messages. The messaging app is getting Google Assistant support. This means you'll be able to see a Google Assistant button appear in the smart replies section of the app. When you tap it, it'll ask Assistant a question and give you options of what you can answer in your thread. Like if you want to find out about restaurants in the area where you're meeting up with a friend. For starters, the feature is limited to English.
Google claims it isn't reading your messages. The only information that gets sent to Google is the text of the Google Assistant button you tap. The "suggestions chips" are based on a local analysis of what's in your conversation thread. When you tap on a chip it'll send you a card with information and options. From there you can send the results of your search to the chat. This feature basically helps you do your search right from within the thread.
Source: The Verge