Trouble Inserting an element into xml using XSLT 2.0

I am receiving a soap message(XML) and after adding a new XML element i have to send it further to another service. Is it possible to add the element by using XSLT 2.0. If so then how?

Input Message

<?xml version="1.0" encoding="utf-8"?>
<soapenv:Envelope xmlns:soapenv="http://ift.tt/sVJIaE">
<soapenv:Body>
<tns:GLBookingMessage xmlns:tns="http://ift.tt/1tLgsPS"> 
<tns:GLBooking> 

 </tns:GLBooking>
  </tns:GLBookingMessage>
</soapenv:Body>
</soapenv:Envelope>

Required Output Message:

<?xml version="1.0" encoding="utf-8"?>
<soapenv:Envelope xmlns:soapenv="http://ift.tt/sVJIaE">
<soapenv:Body>

<tns:GLBookingMessage xmlns:tns="http://ift.tt/1tLgsPS"> 
<CHeader>
</CHeader>    
<tns:GLBooking> 

</tns:GLBooking>
</tns:GLBookingMessage>
</soapenv:Body>
</soapenv:Envelope>