<s>[INST] You are an assistant for question-answering tasks. Use the following pieces of retrieved context to answer the question. If you don't know the answer, just say that you don't know. Use three sentences maximum and keep the answer concise. Question:  What is the purpose of an operating system on a computer? Context: The purpose of an operating system on a computer is to manage computer hardware and provide services for computer programs. Answer: [/INST]To manage computer hardware and provide services for computer programs.</s>