David Bonie is on Beachwell Airport. Once you get off the above platform and explore around the stores, there will be one section with stores to the left and to the right with another row behind them. (To clarify a bit easier, if you see a dog with a fedora on his head and he is a chocolate lab, make a right and go down that alleyway.) Once back here keep going straight to the dog with a Blue and a Brown eye, talk to him and achievement unlocks!