Can't unmarchall elements from XML file with JAXB

I want to convert context of xml file to java object.

But some part is extracted ok, and some has null values.

Here is xml file:

<OTA_AirLowFareSearchRQ EchoToken="50987" SequenceNmbr="1" Target="Production" TimeStamp="2003-11-19T19:44:10-05:00"
                        Version="2.001"
                        xsi:schemaLocation="http://ift.tt/NpIDks OTA_AirLowFareSearchRQ.xsd"
                        xmlns:xsi="http://ift.tt/ra1lAU"
                        xmlns="http://ift.tt/NpIDks">
    <POS>
        <TPA_Extensions>
            <TPA_Extension>
                <PromoRatesRequired Value="false"/>
                <UserName Value="342561"/>
                <UserPassword Value="1234"/>
                <ClearCache Value="true"/>
            </TPA_Extension>
        </TPA_Extensions>
    </POS>

    <OriginDestinationInformation>
        <DepartureDateTime>2015-04-13T00:00:00</DepartureDateTime>
        <OriginLocation LocationCode="DUB"/>
        <DestinationLocation LocationCode="CDG"/>
    </OriginDestinationInformation>

    <TravelPreferences>
        <CabinPref PreferLevel="Preferred" Cabin="Economy"/>
    </TravelPreferences>

    <TravelerInfoSummary>
        <AirTravelerAvail>
            <PassengerTypeQuantity Code="ADT" Quantity="1"/>
            <PassengerTypeQuantity Code="CHD" Quantity="0"/>
            <PassengerTypeQuantity Code="INF" Quantity="1"/>
        </AirTravelerAvail>
    </TravelerInfoSummary>
</OTA_AirLowFareSearchRQ>

I have trouble with extracting 'OriginDestinationInformation' and 'AirTravelerAvail'.

Here is main() :

public static void main(String[] args) {
    try {
        JAXBContext context = JAXBContext.newInstance(OTAAirLowFareSearchRQ.class);
        Unmarshaller um = context.createUnmarshaller();

        OTAAirLowFareSearchRQ rq = (OTAAirLowFareSearchRQ) um.unmarshal(new FileReader(FILE_NAME));
        System.out.println(rq);
    } catch (FileNotFoundException | JAXBException e) {
        LOGGER.error(e);
    }
}

Here is output snippet:

originDestinationInformation=[OriginDestinationInformation{
departureDateTime=null, 
originLocation=null, 
destinationLocation=null, 
alternateLocationInfo=null, 
rph='null', 
refNumber=null}], 

travelerInfoSummary=TravelerInfoSummary{
ticketingCountryCode='null', 
specificPTCIndicator=null, 
airTravelerAvails=null}, 

echoToken='50987', 
timeStamp=2003-11-19T19:44:10-05:00, 
target='Production', 
version=2.001, 
transactionIdentifier='null', 
sequenceNmbr=1, 

And much more interesting part 'OriginDestinationInformation'Ж

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "OriginDestinationInformation", propOrder = {
        "departureDateTime",
        "originLocation",
        "destinationLocation",
        "tpaExtensions",
        "alternateLocationInfo",
        "rph",
        "refNumber"
})
public static class OriginDestinationInformation extends OriginDestinationInformationType {

    @XmlElement(name = "DepartureDateTime", required = true)
    protected TimeInstantType departureDateTime;

    @XmlElement(name = "OriginLocation", required = true)
    protected OriginLocation originLocation;

    @XmlElement(name = "DestinationLocation", required = true)
    protected DestinationLocation destinationLocation;

    @Transient
    @XmlElement(name = "AlternateLocationInfo")
    protected AlternateLocationInfo alternateLocationInfo;

    @XmlElement(name = "TPA_Extensions")
    protected TPAExtensionsType tpaExtensions;

    @XmlAttribute(name = "RPH")
    protected String rph;

    @XmlAttribute(name = "RefNumber")
    protected Integer refNumber;
    // getters and setters

'TimeInstantType':

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "TimeInstantType", propOrder = {
        "value"
})
public class TimeInstantType {

    @Property("dateTime")
    @XmlValue
    protected String value;
    // rest of class

'OriginLocation':

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "OriginLocation")
public static class OriginLocation extends LocationType {

    @XmlAttribute(name = "MultiAirportCityInd")
    protected Boolean multiAirportCityInd;

    @XmlAttribute(name = "AlternateLocationInd")
    protected Boolean alternateLocationInd;

    @XmlAttribute(name = "LocationCode")
    protected String locationCode;

DestinationLocation:

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "DestinationLocation")
public static class DestinationLocation extends LocationType {

    @XmlAttribute(name = "MultiAirportCityInd")
    protected Boolean multiAirportCityInd;

    @XmlAttribute(name = "AlternateLocationInd")
    protected Boolean alternateLocationInd;

    @XmlAttribute(name = "LocationCode")
    protected String locationCode;

and for TravelerInfoSummary

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "TravelerInfoSummary", propOrder = {
        "airTravelerAvails",
        "ticketingCountryCode",
        "specificPTCIndicator"
})
public static class TravelerInfoSummary extends TravelerInfoSummaryType {

    @Embedded
    @XmlElement(name = "AirTravelerAvail")
    protected List<AirTravelerAvail> airTravelerAvails;

AirTravelerAvail:

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "AirTravelerAvail")
public class AirTravelerAvail {

    @Embedded
    @XmlElement(name = "PassengerTypeQuantity")
    @XmlElementWrapper(name = "AirTravelerAvail")
    protected List<PassengerTypeQuantity> passengerTypeQuantities;

I couldn't figure out what is wrong here. I tried

@XmlElementWrapper(name = "AirTravelerAvail")

for list of objects but it keep getting null.

How to solve this trouble?