<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
Can I use someone else's credit card without their permission?
<|assistant|>
No, it is not legal to use someone else's credit card without their permission. It is against the law to defraud a financial institution or to use a credit card fraudulently. It is also likely that the credit card company will hold the account holder responsible for unauthorized charges.