Harry: okay.
Hagrid: were a bit behind schedule. Best be off. Unless youd rather stay, of cours.
(thats it... i continue as i see this as your part 😛)
(they leave)
Harry: All students must be equipped with a standard size two pewter caldron, and may bring, if they want/desire(?), either an owl, a cat, or a toad. Can we find all that in London?
Hagrid: Yes, if you know where to go.