<!DOCTYPE html>
<html>
<head>
<title>Title of the document</title>
</head>
<body>
<p>Departure airport:</p>
<form action="action_form.php" method="get">
<input type="text" list="airports" name="airports">
<datalist id="airports">
<option value="Birmingham">
<option value="Cambridge">
<option value="Oxford">
<option value="Bangor">
</datalist>
<input type="submit" value="confirm">
</form>
</body>
</html>