<xs:attributeGroup name="AirProcessingInfoGroup">
    <xs:annotation>
        <xs:documentation xml:lang="en">A collection of information that specifies how the message processing should occur or how the data should be returned.</xs:documentation>
    </xs:annotation>
    <xs:attribute name="TargetSource" use="optional">
        <xs:annotation>
            <xs:documentation xml:lang="en">Specifies to whom the request should be targeted for the information that is to be returned.</xs:documentation>
        </xs:annotation>
        <xs:simpleType>
            <xs:restriction base="xs:NMTOKEN">
                <xs:enumeration value="Core">
                    <xs:annotation>
                        <xs:documentation xml:lang="en">Requested information should be based on travel data (availabiltiy, rates) stored inhouse.</xs:documentation>
                    </xs:annotation>
                </xs:enumeration>
                <xs:enumeration value="Vendor">
                    <xs:annotation>
                        <xs:documentation xml:lang="en">Requested information should taken from the vendor's system.</xs:documentation>
                    </xs:annotation>
                </xs:enumeration>
            </xs:restriction>
        </xs:simpleType>
    </xs:attribute>
    <xs:attribute name="FlightSvcInfoIndicator" type="xs:boolean" use="optional">
        <xs:annotation>
            <xs:documentation xml:lang="en">If true, flight service information should be returned in the response.</xs:documentation>
        </xs:annotation>
    </xs:attribute>
    <xs:attribute name="DisplayOrder" type="DisplayOrderType" use="optional">
        <xs:annotation>
            <xs:documentation xml:lang="en">Specifies the order in which the information should be returned.</xs:documentation>
        </xs:annotation>
    </xs:attribute>
    <xs:attribute name="ReducedDataIndicator" type="xs:boolean" use="optional">
        <xs:annotation>
            <xs:documentation xml:lang="en">If true, reduced data should be returned</xs:documentation>
        </xs:annotation>
    </xs:attribute>
    <xs:attribute name="BaseFaresOnlyIndicator" type="xs:boolean" use="optional">
        <xs:annotation>
            <xs:documentation xml:lang="en">If true, only base fare information should be returned</xs:documentation>
        </xs:annotation>
    </xs:attribute>
    <xs:attribute name="SearchType" use="optional">
        <xs:annotation>
            <xs:documentation xml:lang="en">Specifies (at a high level) the type of search criteria for
this request.</xs:documentation>
        </xs:annotation>
        <xs:simpleType>
            <xs:restriction base="xs:NMTOKEN">
                <xs:enumeration value="Normal">
                    <xs:annotation>
                        <xs:documentation xml:lang="en">No special conditions (default)</xs:documentation>
                    </xs:annotation>
                </xs:enumeration>
                <xs:enumeration value="Window">
                    <xs:annotation>
                        <xs:documentation xml:lang="en">Search should be done for a window of time.</xs:documentation>
                    </xs:annotation>
                </xs:enumeration>
                <xs:enumeration value="ArrivalTime">
                    <xs:annotation>
                        <xs:documentation xml:lang="en">Search should be based on arrival time.</xs:documentation>
                    </xs:annotation>
                </xs:enumeration>
                <xs:enumeration value="PowerFlight">
                    <xs:annotation>
                        <xs:documentation xml:lang="en">Checks availability and fares by manually entered data.</xs:documentation>
                    </xs:annotation>
                </xs:enumeration>
                <xs:enumeration value="AvailableOnly">
                    <xs:annotation>
                        <xs:documentation xml:lang="en">Check for available flights.</xs:documentation>
                    </xs:annotation>
                </xs:enumeration>
                <xs:enumeration value="WaitlistOnly">
                    <xs:annotation>
                        <xs:documentation xml:lang="en">Only check only for waitlist flights.</xs:documentation>
                    </xs:annotation>
                </xs:enumeration>
                <xs:enumeration value="AvailableAndWaitlist">
                    <xs:annotation>
                        <xs:documentation xml:lang="en">Check for available and waitlisted flights.</xs:documentation>
                    </xs:annotation>
                </xs:enumeration>
                <xs:enumeration value="FreighterFlights">
                    <xs:annotation>
                        <xs:documentation xml:lang="en">Check for available freighter flights.</xs:documentation>
                    </xs:annotation>
                </xs:enumeration>
            </xs:restriction>
        </xs:simpleType>
    </xs:attribute>
    <xs:attribute name="AvailabilityIndicator" type="xs:boolean" use="optional">
        <xs:annotation>
            <xs:documentation xml:lang="en">If true, booking class availability should be returned in the response for each of the flight segments.  </xs:documentation>
        </xs:annotation>
    </xs:attribute>
</xs:attributeGroup>