public function getChoices($interaction)
    {
        $return = [];
        if (isset($interaction['choices'])) {
            $i = 1;
            foreach ($interaction['choices'] as $identifier => $choice) {
                $return['choice_identifier_' . $i] = $identifier;
                $return['choice_label_' . $i] = ($choice) ?: '';
                $i++;
            }
            if ($this->headerChoice > count($return)) {
                while ($this->headerChoice > count($return)) {
                    $return['choice_identifier_' . $i] = '';
                    $return['choice_label_' . $i] = '';
                    $i++;
                }
            } else {
                $this->headerChoice = count($return);
            }
        }
        return $return;
    }