Uber doesn't guarantee that a driver will accept your ride request. Your ride is confirmed once you receive your driver details. **Reserve trips made in advance are subject to a cancellation fee. You can cancel at no charge up to 60 minutes before your reservation pick-up time.
Can I trust a scheduled Uber?
Sometimes a driver may not be in the area and the ride would just get cancelled and Uber would send you a notification that no driver responded to the ride. All Uber does for a scheduled ride is try and time it right with a nearby driver to pick you up close to the time you put in the app. There are no guarantees.