custom comment_form fields not displaying

My ideal comment form will have 3 fields- Name, Location, Comment.
I’m using the following bits of code-

comments.php

<?php comment_form(
array(
'fields' => apply_filters( 'comment_form_default_fields', $fields ),
'comment_notes_after' => ' ',
'title_reply' => 'Please feel free to share your home owning hopes, dreams, or concerns?',
'logged_in_as' => '',
)
); ?>

functions.php

<?php
function my_fields($fields) {
$fields['Name'] = '<p>Name</p>';
$fields['Location'] = '<p>Location</p>';
return $fields;
}
add_filter('comment_form_default_fields','my_fields');
?>

As you can see on the live site, that’s not working. Any ideas why/how to remedy?