I hada cashier who was allergic to dogs and I had ...

I hada cashier who was allergic to dogs and I had my service dog with me and she made a comment about a great now it's starting and I and she said I'm allergic and I said I'm sorry and she said yeah right you are. And then she just kept running her mouth about people who take animals on the planes as service or companion pets and snakes and other animals and she just the whole time she was ringing me out that's all she did was ran her mouth and put my anxiety over the roof that now I don't even want to go into any stores with my service dog. cashiers have opinion about this stuff they need to keep their mouth shut and not be running their mouth that people.