As of right now I am making a call to the bookings API for a user with the id of "1001" this returns a JSON object with tons of keys and values.. As you guys can see from my forEach and ng-repeat I am grabbing the arrival_date and printing that on my bookings.html view That works great! However here is where it gets tricky for me as I am not very well versed in PHP, mysql and back-end stuff. 
Aside from the arrival_date I need to get the actual first and last name of the customer.. It's my understanding that I need to do a cross-reference from the bookings table to the customers table which holds the customer_id but the users table is the one holding the customers first and last names! Not sure how I can do that.. The customers_id is '130' when I do on ng-repeat {{booking.customer_id}} I only get the number of the customer '130' and I know is because their actual info is not in that bookings table but in the customers table.
Forgive me if I make no sense but that exactly do I need to do to make this cross reference? Is this a Back-End PHP job or can I do this within Angular?
I've seen lots of examples on here and all over google. However I am curious as to if I do this on my PHP file where we have some DB queries happening and if I do it there.. do I have to make a brand new call to an other API??
Any feedback, suggestions or resources would be greatly appreciate it. Thank you so much in advance and have a good weekend all!
bookingService.js
angular.module('starter')
.service("BookingsService", function($http, $q) {
  var self = this;
  self.bookings = [];
  self.getBookings = function () {
        var deferred = $q.defer();
        $http.get("http://localhost/apiv2/bookings/1001")
        .success(function success (data) {
          console.log(data);
          var bookingData = data.forEach(function(trip) {
            self.bookings.push({
              arrival_date: trip.arrival_date
            });
          })
          self.bookings = data;
          deferred.resolve(true);
        })
        .error(function error (smg) {
          console.error(msg);
          deferred.reject(false);
        })
        return deferred.promise;
      };
BookingsController.js
 angular.module('starter')
 .controller("BookingsCtrl", function($scope, BookingsService) {
  $scope.today = [];
  $scope.test = 'scope test';
    BookingsService.getBookings().then(function success (data) {
      console.log("Success!");
      console.log(data);
      if(data){
        $scope.today = BookingsService.bookings;
      }
}, function error (data) {
  console.log("Error!")
bookings.html - view
<ion-view view-title="Your Bookings">
  <ion-content>
    <h3>Your Bookings</h3>
    <ion-list>
      <ion-item ng-repeat="booking in today">
           <ion-list> 
           <ion-item>
            <h4>
            Passenger: {{booking.customer_id}} 
            Address:{{booking.arrival_address}}
            </h4>
           </ion-item>
           </ion-list> 
      </ion-item>
  </ion-content>
</ion-view>
