In the event that seats become unavailable for some passengers because the number of passengers requesting check-in for the booked flight (limited to persons who request check-in with presentation of Confirmation Code or air tickets confirming that a valid seat reservation has been made at the airport branch of the Company by the time designated by the Company) exceeds the number of seats for the booked flight for reasons attributable to the Company, the Company shall invite passengers who have valid seat reservations and voluntarily stop boarding the booked flight in compliance with the request for cooperation by the Company.