I have set up a repository https://github.com/evacchi/kogito-travel-agency-tutorial with yet-another fork of Maciej's demo. I have upgraded kogito and quarkus to the latest version.
You will try two versions of the tutorial; one will run completely on your local machine. The other can run locally, but it would be more interesting if you tried it on OpenShift.
try this demo.
mvn compile quarkus:dev