Do you read me Hal?

Do you read me, Hal?

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. 
Dave: Where the hell'd you get that idea, HAL? 
HAL: Dave, although you took very thorough precautions in the pod against my hearing you, I could see your lips move. 
Dave: Alright, HAL. I'll go in through the emergency airlock. 
HAL: Without your space helmet, Dave, you're going to find that rather difficult. 
Dave: HAL, I won't argue with you anymore. Open the doors. 
HAL: Dave, this conversation can serve no purpose anymore. Goodbye.