fix phone bug
fix phone bug

GoogleCloudPlatform/dialogflow-ccai-omnichannel,GoogleCloudPlatform/dialogflow-ccai-omnichannel,GoogleCloudPlatform/dialogflow-ccai-omnichannel,GoogleCloudPlatform/dialogflow-ccai-omnichannel,GoogleCloudPlatform/dialogflow-ccai-omnichannel,GoogleCloudPlatform/dialogflow-ccai-omnichannel,GoogleCloudPlatform/dialogflow-ccai-omnichannel,GoogleCloudPlatform/dialogflow-ccai-omnichannel,GoogleCloudPlatform/dialogflow-ccai-omnichannel,GoogleCloudPlatform/dialogflow-ccai-omnichannel,GoogleCloudPlatform/dialogflow-ccai-omnichannel