PHP Contact Form with selectable recepient

Good Morning

I have 'googled' in vain to find a suitable tutorial to help create a php contact form with a user selectable recepient. Basicaly I would like to use the same simple (Name, Email, Enquiry) contact form, but send it to one of three email addresses based on a selection made by the user completing the form. For example if Sales is select then it will be emailed to sales@, Servicing will be emailed to servicing@ or Training emailed to training@

My php knowledage is limited - so is my coding but I can normal follow a good tutorial.

Thanks