system
guilty: My sister was looking for her credit card that she left in the bedroom. I wanted something at the store, I did not have any money, so I borrowed her card.
gpt
I was helping my sister to look for her card, even though I knew she wasn't going to find it 
gpt
That is nice from you. What card is it?
gpt
It was her credit card, I borrowed it without telling her
gpt
Why did you do that?
gpt
I wanted to purchase something and I did not have any money, so I used her card.