Robots will serve as your guides in the future. There are already robots that can make life easier for your customers. This video shows a SPENCER robot guiding a group of travelers to drop them off at a predefined destination. Such a robot can be used at airports to pick up passengers with short connection times at their gate and guide them over up to 800 meters.
The system offers mapping, motion planning, people detection, and task planning. It is an ROS powered system. This project is still a work in progress, but you can find out more about it here.