Prec: true

book_plane(depature_place, date_leave, arrive_place, date_back)

Output: success_plane_booking

Eff: plane_booked= true

book_plane

Prec: true

book_plane(depature_place, date_leave, arrive_place, date_back)

Output: failure_plane_booking

Eff: plane_booked= false

register_event

Prec: true

register_event (event_name, start_registr_date, end_registr_date)

Output: success_registration_notification

Eff: registered_event = true

Prec: true

register_event (event_name, start_registr_date, end_registr_date)

Output: failure_registration_notification

Eff: registered_event = false

Prec: true

book_hotel(name_hotel, place_hotel, date_arrive, date_back)

Output: success_plane_booking

Eff: booked_plane = true

book_hotel

Prec: true

book_hotel(name_hotel, place_hotel, date_arrive, date_back)

Output: failure_plane_booking

Eff: booked_plane = false

Prec: true

register_event (WWW04, 17 May 2004, 22 May 2004)

Output: success_registration_notification

Eff: registered_event = true

Prec: true

book_plane (Rome, date_leave, New York, date_back)

Output: success_plane_booking

Eff: booked_plane = true

Prec: true

book_hotel (hotel_name, New York, date_leave, date_back)

Output: success_hotel_booking

Eff: booked_hotel = true

Prec: true

register_event (WWW04, 17 May 2004, 22 May 2004)

Output: failure_notification

Eff: registered_event = false

Daniela’s eService

Prec: true

book_plane (Rome, date_leave, New York, date_back)

Output: failure_notification

Eff: booked_plane = false

Prec: true

book_hotel (hotel_name, New York, date_leave, date_back)

Output: failure_notification

Eff: booked_hotel = false

the parameters hotel_name, date_leave, date_back are instantiated with valid values

Prec: true

register_event (Data Grid Net, 01 June 2004, 02 June 2004)

Output: success_registration_notification

Eff: registered_event = true

Prec: true

book_plane (Newark, 01 June 2004, Atlanta, 02 June 2004)

Output: success_plane_booking

Eff: booked_plane = true

Prec: true

book_hotel (Marriot, Atlanta, 01 June 2004, 02 June 2004)

Output: success_hotel_booking

Eff: booked_hotel = true

Prec: true

register_event (Data Grid Net, 01 June 2004, 02 June 2004)

Output: failure_notification

Eff: registered_event = false

Prec: true

book_plane (Newark, 01 June 2004, Atlanta, 02 June 2004)

Output: failure_notification

Eff: booked_plane = false

Prec: true

book_hotel (Marriot, Atlanta, 01 June 2004, 02 June 2004)

Output: failure_notification

Eff: booked_hotel = false

Rick’s eService

Prec: true

book_hotel (hotel_name, Venice, 10 February 2004, 25 February 2004)

Output: success_hotel_booking

Eff: booked_hotel = true

Prec: true

book_hotel (hotel_name, Venice, 10 February 2004, 25 February 2004)

Output: failure_notification

Eff: booked_hotel = false

Prec: true

register_event (Venice Carnival, start_registr_date, end_registr_date)

Output: success_registration_notification

Eff: registered_event = true

Prec: true

register_event (Venice Carnival, start_registr_date, end_registr_date)

Output: failure_notification

Eff: registered_event = false

Maria’s eService

the parameters hotel_name, start_registr_date, end_registr_date are instantiated with valid values

Prec: true

book_plane (Madrid, 10 February 2004, 25 February 2004)

Output: success_plane_booking

Eff: booked_plane = true

Prec: true

book_plane (Madrid, 10 February 2004, 25 February 2004)

Output: failure_notification

Eff: booked_plane = false