This is an interesting interaction between a dolphin and a human in Hawaiian waters. The dolphin a fishhook and fishing line in one its pectoral fins with the line also extending into its mouth. When Keller Laros, the human diver, gestures for the dolphin to come over the dolphin does so and appears to wait patiently while Laros carefully removes the hook and attached line.
It's possible to read to much into something like this, supposing that we have a better understanding of the dolphin's thinking than we do. On the other hand, it does seem justified to infer that the dolphin expected or at least hoped for help, and go it.