public PassengerLiftsCost Execute(GetCostOfPassengerLiftsInPeriodQuery query)
{
var journeysInPeriod = _queryDispatcher.Dispatch(new GetJourneysInPeriodQuery(query.Period));
var clerk = new Clerk(new EquallyDistributedCostPolicy(new Money(25m / 100m), query.PassengerId));
var journeys = BuildJourneys(journeysInPeriod);
var liftsExpenses = clerk.CalculateExpenses(journeys);
return(new PassengerLiftsCost(liftsExpenses.TotalExpensesValue.Amount));
}