The key phrases: my flights, my reservations, my hotels, and many others provided similar functionality. In fact, try uttering these phrases in a voice search from Google Now and you'll hear that pleasingly robotic voice read back details about your next booked destination. So, the functionality isn't exactly new, but it's great that it now appears directly in Google Maps.
Download the Updated apk file from below link :
Play Store link is not available for now, above source is genuine you can download from there.