Note : Step 1-3 only applies on first time quest, you'll automatically go to step 4 and onward when you talk to Pedro after the quest timer expired.
Speak with Pedro the Sailor(malaya 326, 68) and ask about the ferry ride. He complains on how the ship can't sail because of the ghosts inside the ship. While listening to his story, he tells you that he saw a black ghost and has suddenly disappeared. He suggests you to take a look inside the boat.
Get inside the boat and walk near Ghost Diwata to start a conversation. No matter what option you choose you'll make her angry and you'll be kicked out the of ship.
Speak with Pedro again and tell him what you saw inside. He suggests you to consult Leader Phong the Mumbaki.
Speak with Leader Mumbaki (malaya 185, 358) and ask for an advice. He tells you that flowers are the best choice to seduce a woman.