module Reservation
{    
    struct Date
    {
        long day;
        long month;
        long year;
    };
    struct Moment
    {
        long hour;
        long minute;
    };
    struct Time    
    {
        Date date;
        Moment moment;
    };
    struct Interval
    {
        Time start;
        Time end;
    };

    typedef sequence<Interval> Intervals;

    exception UnspecifiedTimeTable {};

    interface ReservationService {
       Intervals getTimeTable() raises(UnspecifiedTimeTable);
       long getAvailableSeats(in Interval interval) raises(UnspecifiedTimeTable);
       boolean makeReservation(in long customerId, in Interval interval,  in Interval numberOfSeats) raises(UnspecifiedTimeTable);
       boolean cancelReservation (in long customerId, in Interval interval) raises(UnspecifiedTimeTable);
    }; 
};