Robert: If you don't have time to cook, just boy some snacks.
Rachel: That won't be necessary. I'll bring homemade cookies 😉
Robert: OK, in that case I am the one who's going to the store 😀
Rachel: Get me a pack of onion crisps please.
Rachel will bring some homemade cookies. Robert will go to the store, he'll buy onion crisps for Rachel.