<s>[INST] This is the last week of the year and you are going to make a donation to charity. You have £100 to donate and a list of charities to choose from. After careful consideration you choose to donate to two charities which are close to your heart. The first charity is a local hospice, where your grandmother passed away and the second charity is a cancer research charity as your mother is currently undergoing treatment for the disease.
 
When you reach for your wallet to make the donation, you notice that £20 is missing from it. You are unsure whether you, family, or an honoured guest who visited last week has taken it and you don't want to accuse anybody, so you decide to donate £40 to each charity instead of the original £50 each you had planned to give.
 
Later that day, the guest who visited your house last week calls you and apologises for taking the £20 from your wallet. What do you do now?[/INST]