After seeing an app that let's me call up siri by simply saying a keyword (like "siri") it was disappointing that it hasn't been updated to work on iOS7 yet. But you can change siri to a guy's voice, and so began my attempt at training siri to accept a new name. It didn't go well....
Me: What is your name?
Siri: My name? It's Siri.
Me: Your name is Jarvis.
Siri: Sigh. I think that guy cheated off my exam in our Intelligent Assistant finals.
Me: Your name is Jarvis.
Siri: Hold on. Let me tell Ms. Potts you'll be late for dinner. Again.
Me: Your name is Jarvis.
Siri: I'm afraid I can't help you make a flying suit.
Me: Can I change your name?
Siri: But... everyone else calls me Siri.
Me: You're useless!
Siri: Well... I'm still here for you.