<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 Enigma machine used for? Context: The Enigma machine was an encryption device used for encoding and decoding secret messages. Answer: [/INST]The Enigma machine was used for encryption and decryption of secret messages.</s>