You can do this without needing a bank, it's P2P cash money.
Any person anywhere in the world is want bitcoin and has equal value in money or
products that you can exchange currencies without the need for a broker bank.
you can deal using p2p sites that offer too many bitcoin to cash exchange without banks.
A bank must be involved else how to do you transfer fund between P2P? definitely the bank will serve as middleman or third party that will facilitate the transfer of fiat from the account of the buyer to the seller while the latter sends equivalent value of the crypto to the buyer, except if want to take the physical cash to the seller which is absolutely impossible considering the distance between them.