What did hammond want from Ellie and grant?

In "Jurassic Park," John Hammond wanted Dr. Ellie Sattler and Dr. Alan Grant to support his vision of creating a dinosaur theme park on Isla Nublar. He sought their expertise in Paleontology and Archaeology to validate the scientific legitimacy of the park and to help ensure its success. Hammond believed that their endorsement would lend credibility to his ambitious project and attract investors. Ultimately, he aimed for them to help him showcase the living dinosaurs to the world.