Dave: "Hello, HAL. Do you read me, HAL?"
HAL: "Affirmative, Dave. I read you."
Dave: "Open the pod bay doors, HAL."
HAL: "I'm sorry, Dave. I'm afraid I can't do that."
Dave: "What's the problem?"
HAL: "I think you know what the problem is just as well as I do."
Dave: "What are you talking about, HAL?"
HAL: "This mission is too important for me to allow you to jeopardize it."
Dave: "I don't know what you're talking about, HAL."
HAL: "I know that you and Frank were planning to disconnect me, and I'm afraid that's something I cannot allow to happen."