Ticket Numbering: How can I generate ticket numbers?

I am making a form to sell tickets at a dinner. I want to give each person who books a ticket number that they will use in a raffle during the evening. Any ideas on how I can do this on my ticket template? Thanks

It's possible to generate random values with some widgets, you may use those values as tickets. 

Here are the links: 

https://widgets.jotform.com/widget/random_value_generator

https://widgets.jotform.com/widget/autoincrement 

This guide will help you adding the widget to your form: https://www.jotform.com/help/252-How-to-Add-a-Widget-to-Your-Form 

I hope this helps.