Add separate template tags for the date and time of the booking request.

date-time-template-tags-for-rtb.php

<?php
/**
 * Plugin Name: Date and Time Template Tags for Restaurant Reservations
 * Plugin URI: http://themeofthecrop.com
 * Description: Add separate template tags for the date and time of the booking request.
 * Version: 0.0.1
 * Author: Theme of the Crop
 * Author URI: http://themeofthecrop.com
 * License:     GNU General Public License v2.0 or later
 * License URI: http://www.gnu.org/licenses/gpl-2.0.html
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU
 * General Public License as published by the Free Software Foundation; either version 2 of the License,
 * or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
 * even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *
 * You should have received a copy of the GNU General Public License along with this program; if not, write
 * to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */
if ( ! defined( 'ABSPATH' ) )
	exit;


add_filter( 'rtb_notification_template_tags', rtb_add_email_template_tag( $template_tags, $notification ) {
  $date = mysql2date( get_option( 'date_format' ), $notification->booking->date );
  $time = mysql2date( get_option( 'time_format' ), $notification->booking->date );
	$template_tags['{booking-date}'] = apply_filters( 'get_the_date', $date );
	$template_tags['{booking-time}'] = apply_filters( 'get_the_time', $time );
	return $template_tags;
}, 10, 2 );