Microsoft digital personal assistant Cortana now allows consumers to connect their Xbox Live account to get all gaming related info when needed. Similar to how you add Uber and Office 365 to Cortana, Go to Cortana->Notebook->Connected Account.
Click Xbox Live and sign in to your Xbox Live account and connect it to Cortana.
Once added, you can also disconnect it from Cortana whenever you want it.
Once added, you will be able to get info on your gaming activity, notifications on gaming requests, relevant game news and more.