Here are some example to answer your question:
Saan po ang daan patungong ________?
Which way to go to ___________?
To greet singles and couples and to ask direction:
Magandang araw po (Good day)
Pwede po bang magtanong? (Can I ask a question?)
Saan po ba ang daan patungong_________? (Which way to go to________?)
There are specific terms to call a person or locals before asking them, if you think he is older than you, you can put "Kuya" (older brother) and if it is a she you can use "Ate". If they are younger you can use "bata" (child). This terms should be place before the question,
example: "Kuya, pwede bang magtanong? Saan po ba ang daan patungong _______?
The literal translation would be "Older brother, Can I ask a question? Which way to go to______?
You must remember that the use of "Kuya, Ate, and Bata" can be used on tagalog speaking areas like Luzon and Metro Manila, if you go down the Philippines, change it to "Amigo" and "Amiga" a Spanish word for friend, amigo for boy and amiga for girl, and the question will also be different depending on which province you are in, we have more than 170 dialects. But not to worry, people here speaks and understand English. If you speak Spanish for sure you'll understand some of our words.