Spanish people shopping

On Sunday I had to work. I was at the register and checking out this hispanic family. They had a couple pairs of clothes and some food. It was hard to understand cause when working the register you have to try to make the customer feel welcome and make small talk with them. They spoke in Spanish the whole time and I only understood alittle of it. I heard some words that we have learned and kinda was able to pick out what they may have been talking about to their kids.