What to say when friends dad dies?

When a friend's dad passes away, it's important to express your condolences sincerely. You might say something like, "I'm so sorry to hear about your dad's passing. He was a wonderful person, and I can't imagine what you're going through. I'm here for you if you need someone to talk to or if there's anything I can do to help." Offering your support and being present for your friend is what matters most during this difficult time.