Google quietly announced on Google+ an upgrade to their field test of showing your Gmail related content in your search results.
Now instead of showing just flight results and your emails, it now will show your restaurant reservations, your hotel bookings, your event tickets and even order receipts. All you need to do is search for things like [my orders], [my reservations], [my flights] and so on.
Here are some screen shots of how the results may look:
Now, again, this is only available to limited users. U.S. users on basic gmail accounts, not Google Apps users, who opt into the field trial at this URL.
Forum discussion at Google+.
