<xsd:element name="AirInfo" minOccurs="0">
    <xsd:annotation>
        <xsd:documentation xml:lang="en">Identification and authentication information related to airline travel requests.</xsd:documentation>
    </xsd:annotation>
    <xsd:complexType>
        <xsd:attribute name="ERSP" type="Code_IATA_ERSP" use="optional">
            <xsd:annotation>
                <xsd:documentation xml:lang="en">A unique IATA (in cooperation with ATA and ARC) code used as a means of identification when performing online bookings with airlines. Source: http://bit.ly/OTA2_ERSP</xsd:documentation>
            </xsd:annotation>
        </xsd:attribute>
        <xsd:attribute name="airlineVendorID" type="Code_IATA_AirlineID" use="optional">
            <xsd:annotation>
                <xsd:documentation xml:lang="en">A two character IATA assigned airline code. Source: http://bit.ly/OTA2_IATA_AirlineCode</xsd:documentation>
            </xsd:annotation>
        </xsd:attribute>
        <xsd:attribute name="airportCode">
            <xsd:annotation>
                <xsd:documentation xml:lang="en">A three character IATA assigned airport code. Source: http://bit.ly/OTA2_IATA_AirportCodes</xsd:documentation>
            </xsd:annotation>
        </xsd:attribute>
        <xsd:attribute name="firstDeparturePoint" type="Code_IATA_Airport" use="optional">
            <xsd:annotation>
                <xsd:documentation xml:lang="en">An IATA airline or city code for the point of first departure in a trip. Source: http://bit.ly/OTA2_IATA_AirportOrLocationCode</xsd:documentation>
            </xsd:annotation>
        </xsd:attribute>
    </xsd:complexType>
</xsd:element>