Passing variable from one template to another

I am trying to pass data from one wordpress template form to another. To make it simple, I have created two templates (and associated them with WP pages as a standard page) as follows:

<?php
/*
Template Name: Form test
*/
get_header();
?>

<form action="/form-result/" method="post">
<input type="text" name="name" size="20" />
<input type="submit" value="Go" />
</form>

<a href="/form-result/">Result page</a>
<a href="/form-result/?name=Elodie">Result page</a>

<?php get_footer(); ?>

and

<?php
/*
Template Name: Form result
*/
get_header();
$name = $_REQUEST['name'];
?>

And the name is <?=$name?>

<?php get_footer(); ?>

When I click on the text link Result page I get to the /form-result/ page, however, if I submit the form, I get a page not found sort of error. After verifying, I found that the problem is coming from trying to pass the variable from one page to another.

Pusing further, I found that <a href="/form-result/?name=Elodie">Result page</a> get an error page whereas <a href="/form-result/">Result page</a> takes me properly to the next page.

Probably I am missing something small.

Any help here ?