Added OpenAPI docs using nelmioAPIDocBundle.

src/Request/BookingDetailsRequest.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace App\Request;
+
+use OpenApi\Attributes as OA;
+
+class BookingDetailsRequest
+{
+    #[OA\Property(description: 'Booking reference number')]
+    public string $refNumber;
+
+    #[OA\Property(maxLength: 255, description: 'Email associated to the booking')]
+    public string $email;
+}