Added Service

lib/models/office.dart

@@ -1,10 +1,15 @@
 class Office {
-  Office({required this.id, required this.name});
+  Office({required this.id, required this.name, this.serviceId});
 
   final String id;
   final String name;
+  final String? serviceId;
 
   factory Office.fromMap(Map<String, dynamic> map) {
-    return Office(id: map['id'] as String, name: map['name'] as String? ?? '');
+    return Office(
+      id: map['id'] as String,
+      name: map['name'] as String? ?? '',
+      serviceId: map['service_id'] as String?,
+    );
   }
 }

lib/models/service.dart

@@ -0,0 +1,10 @@
+class Service {
+  Service({required this.id, required this.name});
+
+  final String id;
+  final String name;
+
+  factory Service.fromMap(Map<String, dynamic> map) {
+    return Service(id: map['id'] as String, name: map['name'] as String? ?? '');
+  }
+}