How might you further refactor this code?

refactor.php

<?php

    // ....
    
    /**
     * Register a new subscriber
     *
     * @return Response
     */
    public function store()
    {
        $input = Input::all();

        // If the user doesn't validate, get out of here
        if (User::isInvalid($input))
        {
            return Redirect::back()
                ->withErrors(User::$validation)
                ->withInput();
        }

        // Now, let's try to subscribe them
        $subscription = $this->billing->subscribeUser();

        // If an error occurred, go back and tell the user
        if ($subscription->error)
        {
            return Redirect::back()
                ->with('flash_message', $subscription->error);
        }
        
        // Otherwise, create the new user
        $user = $this->user->create([
            'subscription_id' => 1,
            'billing_id'      => $subscription->customer->id,
            'username'        => $input['username'],
            'email'           => $input['email'],
            'password'        => Hash::make($input['password']),
            'active'          => 1,
            'last_logged_in'  => new DateTime
        ]);

        // Then log them in
        Auth::login($user);
        
        // And finally redirect to lessons page with message
        return Redirect::to('lessons')
            ->with('flash_message', 'You are now a Laracasts member!');
    }

with the repository pattern?