api_instantiation.hpp

std::unique_ptr<IFindTheBestPlaces> find_best_places_service()
{
    ISearchTrains& iSearchTrains = ...;
    IReserveTrains& iReserveTrains = ...;
    ILog& iLog = ...;
    return std::make_unique<FindTheBestPlaces>(iReserveTrains, iSearchTrains, iLog);
}