"I had a wonderful experience dining here with my family and fiancé, but unfortunately, one of your waitresses made a serious mistake. Despite my efforts to communicate in both Spanish and English, she repeatedly asked if my fiancé was my brother, which was unprofessional. I corrected her and explained the situation, but she continued to act ignorant. I don't care where she is from, as I have friends from various Latin American countries who would never behave in such a manner at work. It is important for her to learn proper professional conduct, especially when I am giving generous tips to her and her colleague. I do not want to make a big deal out of this, but I fear that if I return and encounter the same waitress, I may lose my temper and potentially face consequences."