If you are in an online gaming room and someone that you do not know asks you about personal information (same age as you-or close), what do you do?

if I'm in a chat room and somebody ask me a personal question even doe we close to the same age . i wouldn't tell them i would want to know why they want to know .but that's how you get to know each other if its an sexual question i wouldn't answer of we just getting to know each other that fine with me as long as the answer the question first.