<xs:element name="SeatPref" minOccurs="0" maxOccurs="unbounded">
    <xs:annotation>
        <xs:documentation xml:lang="en"> Indicates preferred seat characteristics.  Refer to OTA Code List Seat Preference (STP) for codes.</xs:documentation>
    </xs:annotation>
    <xs:complexType>
        <xs:attributeGroup ref="SeatPrefGroup" />
        <xs:attribute name="FlightDistanceQualifier" use="optional">
            <xs:annotation>
                <xs:documentation xml:lang="en">Used to distingish a flight as long haul or short haul.</xs:documentation>
            </xs:annotation>
            <xs:simpleType>
                <xs:restriction base="xs:NMTOKEN">
                    <xs:enumeration value="LongHaul">
                        <xs:annotation>
                            <xs:documentation xml:lang="en">Designates a flight as a long haul.</xs:documentation>
                        </xs:annotation>
                    </xs:enumeration>
                    <xs:enumeration value="ShortHaul">
                        <xs:annotation>
                            <xs:documentation xml:lang="en">Designates a flight as a short haul.</xs:documentation>
                        </xs:annotation>
                    </xs:enumeration>
                </xs:restriction>
            </xs:simpleType>
        </xs:attribute>
        <xs:attribute name="InternationalIndicator" type="xs:boolean" use="optional">
            <xs:annotation>
                <xs:documentation xml:lang="en">When true, indicates an international flight.</xs:documentation>
            </xs:annotation>
        </xs:attribute>
        <xs:attribute name="AirlineVendorPrefRPH" type="ListOfRPH" use="optional">
            <xs:annotation>
                <xs:documentation xml:lang="en">Reference to one or more airlines in VendorPref.</xs:documentation>
            </xs:annotation>
        </xs:attribute>
        <xs:attribute name="PassengerTypeCode" type="AlphaLength3" use="optional">
            <xs:annotation>
                <xs:documentation xml:lang="en">Code used to indicate the type of traveler (e.g., ADT, CHD, INF, GRP).</xs:documentation>
            </xs:annotation>
        </xs:attribute>
        <xs:attribute name="TransferAction" type="TransferActionType" use="optional">
            <xs:annotation>
                <xs:documentation xml:lang="en">Indicates under what conditions this element will be transfered to the booking.</xs:documentation>
            </xs:annotation>
        </xs:attribute>
    </xs:complexType>
</xs:element>