Disable JAXB NameSpace ns1

I am getting below output while marshalling,

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Travel111 xmlns="http://travel" xmlns:ns2="http://mycompany/train" xmlns:ns3="http://mycompany/passenger">
    <train>
        <ns2:Passengers>
            <ns2:Passenger>
                <ns3:TicketNumber>10000</ns3:TicketNumber>
            </ns2:Passenger>
            <ns2:Passenger>
                <ns3:TicketNumber>20000</ns3:TicketNumber>
            </ns2:Passenger>
        </ns2:Passengers>
    </train>
</Travel111>

I don't want Namespace attribute like ns2,ns3. I want below output using JAXB

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Travel111 xmlns="http://travel">
    <train xmlns="http://mycompany/train">
        <Passengers xmlns="http://mycompany/passenger" >
            <Passenger>
                <TicketNumber>10000<TicketNumber>
            </Passenger>
            <Passenger>
                <TicketNumber>20000</TicketNumber>
            </Passenger>
        </Passengers>
    </train>
</Travel111>

what i have to change in packe-info.java to get above output thanks in advance