OK, so Siri is not quite as sophisticated as, say, Scarlett Johansson’s robot character in Her. Sometimes, in fact, she has some trouble pronouncing your name, or your friend’s name.
That’s a problem, but Siri can learn new things! In fact, a little-known feature in iOS7 allows you to verbally educate Siri on how to say the names of your contacts. - Alyssa Bereznak
Here’s how you do it: