UserBundle/Resources/views/Resetting/request_content.html.twig
<form action="{{ path('fos_user_resetting_send_email') }}" method="POST" class="fos_user_resetting_request form-horizontal">
<div class="form-group">
<label for="username" class="col-md-3 control-label">{{ 'resetting.request.username'|trans({}, 'FOSUserBundle') }}</label>
<div class="col-md-9">
<input type="text" class="form-control password" id="username" name="username" required="required">
</div>
</div>
<div class="form-group action-buttons">
<label class="col-md-3 control-label"></label>
<div class="col-md-9">
<input type="submit" class="btn btn-info" value="{{ 'resetting.request.submit'|trans({}, 'FOSUserBundle') }}" />
</div>
</div>
</form>