I try to buy non GMO foods.  I am nervous about eating GMO foods.
What does GMO stand for? And why would you be nervous about them?
I think it stands for genetically modified organism.  I am unsure if it is safe to eat foods that have had their genes messed with by people.
Oh that sounds awful! Is there any proof that it's unsafe? What makes it unsafe?
I was hoping that since you were knowledgeable about the subject, you could tell me more about GMO foods. 
Well, I have heard that genetically modified foods have undergone a lot of controversy, including whether there should be labels stating the dangers of genetically modified foods.
Do you know about any dangers of consuming them?  Do they cause cancer or sickness?
effect of genetically modified crops on health and the environment, the effect on pesticide resistance, the impact of such crops for farmers, and the role of the crops in feeding the world population. In addition, products derived from GMO organisms play a role in the production of ethanol fuels and pharmaceuticals.
Specific concerns include mixing of genetically modified and non-genetically modified products in the food supply, effects of GMOs on the environment, the rigor of the regulatory process, and consolidation of control of the food supply in companies
genetically engineered foods as they would any other new product requiring extensive testing to provide it is safe for human consumption, the U.S. does not. The Food and Drug Administration generally considers a food with origins from genetically modified organisms (GMO) to be as safe as its conventional counterpart. Numerous studies have backed industry claims that GMO foods appear to be safe for human consumption, including an examination of more than 130 research projects conducted in the European Union prior to 2010 and work published by the American Medical Association's Council on Science