Google already takes advantage of the connections between all the services it offers to provide its users some convenient, time-saving tools. For instance, when you get a message in Gmail that mentions a time or date, Google automatically detects that text, underlines it, and gives you a quick way to add the event directly to your Google Calendar. From the looks of things, though, Google may be about to take this kind of automated system and really run with it, letting Google Now detect events in conversations you have from sources beyond just Gmail, and then suggest you add them to your Calendar.
Android Police has heard from one of its connections that Google’s working on adding just such a mode to Now, and notes that there are already some text strings in place in the Google Search app which seem to support the idea: talk about “inferred events,” and messages asking “want this event in your calendar?”
It’s not clear exactly what Google Now would scan in order to make these inferences, but the presumption is that besides Gmail, we’d also be looking at Hangouts, including IMs and maybe even text messages. There’s also no telling when the feature might go live (assuming it actually does), but with some of the framework in place already, this could very well crop up in the next release or two.
Source: Android Police