Half the dialogue has nothing to do with the plot and that's sort of the entire point.
Fun fact: "Travolta hadn't had a hit in over a decade before Tarantino cast him as Vincent Vega."
A film about a bloke who just wants his rug back, and honestly that's a cause worth fighting for.
Fun fact: "The word 'dude' is spoken roughly 160 times in the film, about once every 45 seconds."