Alfred told his audience that they should try to avoid a certain restaurant in town because he ate there for the first time over the weekend and the food wasn't very good, and the service was terrible

Since some of the audience members were regulars at that restaurant and found that the food and service were good, what logical fallacy is Alfred guilty of using and why?
What will be an ideal response

Alfred is guilty of using a hasty generalization. He ate at the restaurant one time and used that single experience to draw general conclusions about the food and service. A person who draws a conclusion from too little evidence or nonexistent evidence is making a hasty generalization.