resources/views/user/appointments/timeslot/_contact-register.blade.php
<div class="row">
<div class="form-group col-md-4 col-md-offset-4">
<div class="form-group has-feedback">
<label for="email">{{ trans('user.appointments.form.email.label') }}</label>
<input type="email" name="email" class="form-control" placeholder="{{ trans('user.appointments.form.email.label') }}" required>
<span class="glyphicon glyphicon-envelope form-control-feedback"></span>
</div>
</div>
</div>