My favorite four tools for running a game:
Yes, And: most people are familiar with this. You accept what the player is doing and add to it. "I go to open the door." "You open the door and a large friendly dog jumps out, pinning you to the ground."
No, But: a lot of people know this one, too. You aren't letting the player Do The Thing, BUT something else happens! "I try to stab the shop keep." "The shop keep dodges your attack, but trips and falls to the floor, dropping the key he was palming."
Yes, But: much less used but fun! The player's choice works, technically, but there's Unexpected Consequences! "I go to smash the box." "Your mace falls squarely on the chest but it deforms, absorbing the blow and revealing a massive row of teeth!"
No, And: use with caution, for moments when the Fuck Around has occurred, and now it's Find Out's initiative. "I'm going to try and seduce the guard." "Unbeknownst to you, the guards are all eunuchs under a vow of celebacy and he takes significant affront at your presumption."
I don't use these for everything, but they're great tools for when an action needs a bit of back-and-forth.