Open new url on dropdown selection

Hi,

I’m pretty new to WordPress and websites as a whole.
I have a contact form which is often being used for the wrong type of enquiry and would like to add a dropdown list for enquiry type.

I would like to redirect the user to the correct page for their enquiry based upon the selection they have made from the dropdown list.

I have added the dropdown list already but have no idea how to then re-direct the customer to the correct page.

Contact form is here – http://luggage-point.co.uk/?page_id=38