Ask your dad if he already picked up a computer or if he dropped it off so then maybe if he dropped his computer off you can meet him when he comes again,
or if he already picked up a computer that got fixed ask your dad what his name was and like give him a call or sumthing..
My dad fixes computers. While he was talking to a client, my dad told me the client was from cuba (actually i overheard in a conversation.) The client saw me playing chess. He said that he remembers when he was young he knew Capablanca (at least that is what my dad told me he told him.) My dad doesn't know much about chess so when he told me i was simply amazed and he didnt know why. To know Capablanca! But when my dad told me the client was already gone...i wanna meet him again...