Rename UserFlight to UserBid to match functionality

app/Models/UserBid.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace App\Models;
+
+use Eloquent as Model;
+
+/**
+ * @package App\Models
+ */
+class UserBid extends Model
+{
+    public $table = 'user_bids';
+
+    public $fillable = [
+        'user_id',
+        'flight_id',
+    ];
+
+    /**
+     * Relationships
+     */
+    public function flight()
+    {
+        return $this->belongsTo('App\Models\Flight', 'flight_id');
+    }
+
+    public function user()
+    {
+        return $this->belongsTo('App\Models\User', 'user_id');
+    }
+}