How to send email base on selection from dropdown list

Hi, I am attempting to create a contact us form. In the form, there's a drop down with 3 people to choose from. I would like it when each person is chosen, that, that specific person receives an email. How do I go in achieving this?

Thanks!

You can use conditional email on your form. Please refer to the user guide: 

How-to-Send-Email-Based-on-User-s-Answer

So in your case, you will use the Dropdown list selection as the basis as to where the email will be sent.

Let us know if you need further assistance.