TourAndTravelFacade class for facade design pattern

TourAndTravelFacade.scala

package facade

import subsystems.{ShuttleBooking, GuideBooking, HotelBooking, TicketBooking}

class TourAndTravelFacade
{
    val ticketBooking = new TicketBooking
    val hotelBooking = new HotelBooking
    val cabBooking = new ShuttleBooking
    val guideBooking = new GuideBooking

    def bookHolidayPackage(tourPackage : String, destination : String, departure : String) : Boolean =
    {
        ticketBooking.bookFlight(tourPackage, destination, departure)
        hotelBooking.bookHotel(tourPackage, destination)
        cabBooking.bookShuttle(tourPackage)
        guideBooking.bookGuide(destination)
        true
    }
}