Is there a module that allows conditional fields on product pages?

[projects]

I'm trying to create something where on the product page, there's a field for Number of Attendees.

 

Depending on the number selected under that field, more fields would show. So for example if 1 attendee is selected then one address and phone fields show. If 4 attendees are selected then four different address and phone fields show.

 

Is there a module that can accomplish this? I came across Module Advanced customizations, but not sure if that does conditional statements like what I'm trying to accomplish.