这面试题难了点吧，大家来看看啊xml的
<OTA_AirAvailRS   xmlns= "http://webservices.sabre.com/sabreXML/2003/07 "   xmlns:xs= "http://www.w3.org/2001/XMLSchema "   xmlns:xsi= "http://www.w3.org/2001/XMLSchema-instance "   EchoToken= "String "   TimeStamp= "2007-03-01T00:18:25 "   Target= "Production "   Version= "2003A.TsabreXML1.3.1 "   SequenceNmbr= "1 "   PrimaryLangID= "en-us "   AltLangID= "en-us ">
    <Success   />
    <Warnings>
        <Warning   ShortText= "NO   MORE   SQ-1*   FOR   INTERLINE   CONX "   />
    </Warnings>
    <OriginDestinationOptions>
        <OriginDestinationOption>
            <TPA_Extensions>
                <OriginCityTimeZoneCode   Code= "Z8 "   />
                <DestinationCityTimeZoneCode   Code= "PDT "   />
                <TimeZoneDifference   Code= "-15 "   />
                <Text> NO   MORE   SQ-1*   FOR   INTERLINE   CONX </Text>
                <DayOfWeek> THU </DayOfWeek>
            </TPA_Extensions>
            <FlightSegment   DepartureDateTime= "2007-03-22T16:00:00 "   ArrivalDateTime= "2007-03-22T16:30:00 "   StopQuantity= "0 "   RPH= "1 "   FlightNumber= "38 "   SmokingAllowed= "false "   Ticket= "E ">
                <DepartureAirport   LocationCode= "SIN "   CodeContext= "IATA "   />
                <ArrivalAirport   LocationCode= "LAX "   CodeContext= "IATA "   />
                <OperatingAirline   Code= "SQ "   FlightNumber= "38 "   />
                <Equipment   AirEquipType= "345 "   />
                <MarketingAirline   Code= "SQ "   />
                <MarketingCabin>
                    <Meal   MealCode= "M "   />
                </MarketingCabin>
                <BookingClassAvail   ResBookDesigCode= "Z "   Availability= "2 "   RPH= "1 "   />
                <BookingClassAvail   ResBookDesigCode= "C "   Availability= "0 "   RPH= "2 "   />
                <BookingClassAvail   ResBookDesigCode= "J "   Availability= "0 "   RPH= "3 "   />
                <BookingClassAvail   ResBookDesigCode= "D "   Availability= "0 "   RPH= "4 "   />