Agree with BackPacker 100%. You're not qualified to fly the aircraft, so unless your friend is qualified to instruct you on the aircraft, you can't log the time.
However, if you want to keep a record of your flight, LASORS allows you to record it in your logbook. Your capacity for the flight should be recorded as "SNY" (supernumary), and the hours must not be added to your totals.
Enjoy it!
FFF
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