Banker: Okay, now just sign here...
Banker: Um, Sir, do you have a last name?
Link: ...
Banker: Yes, of course. Nalia, come here please.
Nalia: *uses Hylian Sign Language* Hello. How are you?
Link: *signs to Saria* What is she doing? Is she trying to use Kokiri signs?
Saria: *signs back to Link* I believe she is using a form of Hylian Sign Language.
Link: But, why? I can hear just fine. I only cannot speak.
Saria: *Now speaking to the banker* Um, he can hear. He only cannot speak. And, to answer your question, his last name is unknown, as a baby found in the Kokiri Forest.
Banker: Oh. Well, I can only send you off. Maybe you can ask Princess zelda for advice.
Link: *signs to Saria* Looks like we got what we came for.
Saria: *signs back to Link* Yep, an excuse to see Zelda.