def fill_empty_seats(seats_names_dict, seats):
    """
    Fill empty seats with names 'empty'
    :param seats_names_dict: seats:names dict
    :param seats: list of seats that should be in the dict
    :return: seats:names dict
    """
    for seat in seats:
        if seat not in seats_names_dict:
            seats_names_dict[seat] = 'empty'

    return seats_names_dict