When you are shopping you really don’t need to jump down someone’s throat saying “I’m just looking” when all they have said is “Hi.”
I don’t understand why people are so afraid of being approached while they are shopping. I get when someone approaches you as you’re just walking by but if you have stopped to look at something you have to expect that someone is going to say something to you.
Just because someone is walking towards you to say hi doesn’t mean you need to run away in fear of the person. Just be polite and say hi back!