'That's' in the Bible

But Hannah replied, "That's not the way it is, my lord! I am under a great deal of stress. I have drunk neither wine nor beer. Rather, I have poured out my soul to the Lord.

So Saul said to his servant, "That's a good idea! Come on. Let's go." So they went to the town where the man of God was.

If he should then say, 'That's fine,' then your servant is safe. But if he becomes very angry, be assured that he has decided to harm me.