Add the file ...\components\com_easysocial\themes\wireframe\conversations\default\lists.php
on the line 48 code -
<li>
<a href="javascript:void(0);" data-es-rename>
<?php echo JText::_('COM_EASYSOCIAL_CONVERSATION_EDIT_TITLE');?>
</a>
</li>
Users can then Edit Title and in the list of conversations