A support desk — tickets with status and priority plus a threaded agent/customer message conversation — on the app's own /api backend.
Open Helpline — Support desk in the no-code builder and it reshapes itself as you chat — rename it, retheme it, add screens, change the data model. Publish when you are ready. You are not editing a page: the template is a complete product, with a web app, a native mobile app, a REST API and a seeded database.