Page Comparison

<availability_request>
  <link>
    <user>integer<user>character(420)</user>
    <password>character(20)</password>
  </link>
  <lodging>
    <lodging_id>integer(8)</lodging_id>
    <date_from>yyyy-mm-dd (iso8601)</date_from>
    <date_to>yyyy-mm-dd (iso8601)</date_to>
  </lodging>
</availability_request>