Help with PHP Emailing

Hi I need help modifying the php code inside a plug in.
I think it's fairly simply but I have no idea what I'm doing…. can you please help.
I want to change the code below so the body of the email also contains the name of the person who made the booking as well as other notes or details they filled in the form.
See this section of the code:
if (!$errors):
$to = "";
$subject = "Booking – Confirmation";
$body…
Help with PHP Emailing

See original post by fullylucky