Ὁ Δεσμώτης

ὁ ἕκτος: ποῦ εἰμι;
ὁ δεύτερος: ἐν τῇ κώμῃ.
ὁ ἕκτος: τί χρῄζετε;
ὁ δεύτερος: μάθησιν.
ὁ ἕκτος: πρὸς τίνος ἐστέ;
ὁ δεύτερος: τοῦτ᾽ ἂν μηνύσαι. χρῄζομεν μάθησιν… μάθησιν… μάθησιν.
ὁ ἕκτος: οὐ κτήσεσθε.
ὁ δεύτερος: ἀμόθεν γέ ποθεν κτησόμεθα.
ὁ ἕκτος: τίς εἶ;
ὁ δεύτερος: ὁ νέος δεύτερος.
ὁ ἕκτος: τίς ἐστι ὁ πρῶτος;
ὁ δεύτερος: σὺ ὁ ἕκτος εἶ.
ὁ ἕκτος: ἀριθρὸς οὔκ εἰμι, ἐλεύθερός γ᾽ ἀνήρ εἰμι!
ὁ δεύτερος γελᾷ.

…It’s probably full of errors, but I came up with an interesting translation challenge and then kinda got carried away.
The challenge relies on the idea that “You are Number Six” has a hidden comma after “are”—i.e. that Number Six is Number One. How, I wondered, could such a sentence be translated in to a language with a marked vocative? (Although it depends on how you translate “Number Six” to begin with, it’s almost certain you will be lacking an article in the vocative form.) After some deliberation I came up with the idea of using an appositive—which, due to free word order, looks like a predicate.

(Edits: fixed voice of κτάομαι, changed cardinals to ordinals, fixed a few accents)

Wouldn’t it be better to use ordinal numbers?

Also it should be

κτήσεσθε
κτησόμεθα

I could. Heck, given that δεύτερος also means “next”, that could serve as a bit of witty wordplay.

Some minor points (of course I can be wrong):

πρός τινός ἐστε; → πρὸς τίνος ἐστέ; (τίνος is interrogative pronoun τίς)
σύ ὁ ἕκτος εἶ. → σὺ ὁ ἕκτος εἶ.