Is this conversation natural in informal spoken English or street English?

A: Can I copy Biology notes since 20th June, please?

B: Sends pics (but something is missing)

A: What about the notes for 21 June? Can I have that too, please?

[Street English version] Talking to your close friend.

A: Mate, can I copy that Biology notes since 20th June?

B: Sends pics (but something is missing)

A: Oi! What about the notes for 21 June? You forget it, ain't you?