As a person who does sales, depending on what you are selling there is a whole lot of "massaging the kobe beef" before you close that final deal. Or think of a tango, there is alot of subtle push and pull, twist and turn even a bit of pushiness and coersion before you go in to dip your partner. In sales (but do not try this on a potential date) you are taking a no and turning it into a yes with out the person you are pitching to feeling manipulated or icky causing you to blow the sale and look like (and feel like) a used car dealer. I cant really imagine AI being able to navigate that delicate of a manuever bc its all about artificial relationship building by reading cues and tells. AI would need to be able to navigate Nuances of human emotion, voice inflection, customs, cultures, social etiquette etc...