How to create multi city event registration form?

This guide will help you understand how to create your first form here in Jotform: How-to-Create-Your-First-Web-Form

We also have thousands of templates that you can use, please try to find a form/template you like and then use it: https://www.jotform.com/form-templates/

It will help us provide you with the appropriate workaround/suggestions if you can elaborate further on what you wanted to do using the form.