Can a bank exchange foreign currency?

Excuse me, could you please clarify something for me? I've been wondering, does a bank have the capability to exchange foreign currencies? I'm interested in knowing if it's a standard service that they offer to their customers. I'm planning a trip abroad and need to convert some of my local currency into the foreign currency of my destination. I'm curious if I can rely on my bank to facilitate this exchange, or if I should seek out a specialized foreign exchange service instead. Your insights would be greatly appreciated.