how to extract particular elements

I need to extract customer names with "Name" and save it in a variable. Input is any dummy xml

like response variable should have only this

        <customer name="Name">John</customer>
        <customer name="Name">Kevin</customer>
        <customer name="Name">Leon</customer>
        <customer name="Name">Adam</customer

used this stylesheet

<xsl:stylesheet version="1.0" xmlns:xsl="http://ift.tt/tCZ8VR" xmlns:xs="http://ift.tt/tphNwY">
    <xsl:template match="/">
        <xsl:variable name="request">
            <customers>
                <customer name="Address">1 Doe Place</customer>
                <customer name="State">OH</customer>
                <customer name="Name">John</customer>
                <customer name="Name">Kevin</customer>
                <customer name="Name">Leon</customer>
                <customer name="Name">Adam</customer>
                <customer name="city">Columbus</customer>
            </customers>
        </xsl:variable>
        <xsl:variable name="response">
            <xsl:copy-of select="$request/customers/customer/@name[. = 'Name']"/>
        </xsl:variable>
        <xsl:copy-of select="$response"/>
    </xsl:template>
</xsl:stylesheet>

but it failed