The tasks of the process model defined in the given BPMN 2.0 XML are as follows:

1. register request (`id3a2e2f29-0e15-4dca-9602-6f8929a0dbcb`)
2. decide (`idb86a1356-bb12-4a45-b1a3-d430cf587b6b`)
3. pay compensation (`idd3814e0c-ae8b-41d6-b7a1-7c0e9385eb3e`)
4. check ticket (`id8c2e27f2-838e-47e7-9506-1387d1d642eb`)
5. examine casually (`id1c963927-0fbe-4028-9d31-536a6e5362a9`)
6. reject request (`idfe1bd2a5-fb67-4a1a-b520-d7d02ee587e7`)
7. examine thoroughly (`idc5b9256f-0a5c-43f7-9877-8a7d17977ee2`)
8. reinitiate request (`id25fcead3-d54b-47a1-b9dc-5ac5df8a31db`)