Sending form results to the user of the post the form was sent from

We have one general reservation form that caters to the hotel listings that registered users on our site post. When the form is filled out, we have a hidden field showing us from which post the form was filled in from (basically the name of the hotel). The form is sent to our administration email. What we require is that the forms are sent to not the admin email but to the email address of the user who posted that hotel listing so that they know they have a new reservation lead. Is this possible?

Thank you in advance for the assistance.

Thank you Carl. The link you gave me, I read it. To accomplish this task I used this code in order to have all the hotel listings go to the email address of the user who added that hotel listing. Works like a charm! However, ever time a user adds a new hotel listing, I have to go into that listing and insert via shortcode, the gravity forms "Reservation Form" on the hotel listing page in order for this "new" code to work. Here is the code I used. I inserted it as is into my theme's function.php file at the very bottom:

<?php add_filter( 'gform_notification_email_3', 'route_notification', 10, 2 );
function route_notification($email_to, $entry) {
global $post;
$email_to = get_the_author_email();
return $email_to = get_the_author_meta('email', $post->post_author);
}
?>

I am using a real estate template from gorilla themes which is how i found out about gravity forms. There is a add a listing page (in this case add a hotel) using gravity forms to add the listing from the website as a posting, using the isrealestate id to see it as a listing and not a regular post so that when the form is filled, approved it shows up as a listing on the website. I am not familiar with creating a custom post template or php coding as i am not a programmer. so i would not know where to begin to create one. Here's the link to the site if you wish to see what i've done. http://www.marmariskonaklama.com ... Thank you again. Your idea, if i could do it would be most ideal. I just figured that as listing came in, seeing as we have to approve them first, i would just add the shortcode.