Problem
Assume that you are asked to develop a service platform which allows car owners to rent their car(s) to other people. This service platform will enable car owners to earn money from their car(s) and renters to have a wider choice of vehicles with competitive prices. This is in contrast to the traditional car rental model (e.g. Avis or Thrifty). Unlike ride sharing platforms such as Uber, this car renting model enables users to drive the car themselves.
Identify 2 core services that are specifically provided by the above system and specify them using the Business Service Representation Language. Provide an example to illustrate how service composition and service aggregator work in this system.