I have node content type for booking and created booking page in drupal 7 and same page is displaying error, confirmation and booking page. I am trying to split into three different pages(nodes) using same `node--booking.tpl.php` content type. I have custom `booking.class.php` that manages the booking process using two steps function `prebooking` and `postbooking` 

After booking, I would like to redirect to `xyz.com/booking-confirm` if it's successfully booking and if it's error `xyz.com/booking-error` and currently, using `xyz.com/booking` for all actions.

What should I do? I am not sure, which option works. I have found this using some articles and stuck at this point.

 1. Should I use header to redirect it?

        header('Location: /booking-confirm'); 
        header('Location: /booking-error'); 

 2. Should I hook them in `template.php`?

    `function MYMODULE_user_register_form($form, &$form_state) {
        $form_state['redirect'] = 'path/to/somewhere';
    }`


 3. Where Should I `drupal_goto` to redirect it? it's in `booking.class.php` class? 
 
 4. Where Should I use `hook_init`? It's in `template.php` or `booking.class.php` ?

I am not sure, which is correct option to figure it out. I would like to split the URL using same content type. Any approach to solve the issue.