Before leaving for the West, Holden plans to (a) see Phoebe once more; (b) write a letter to his parents; (c) call Jane and ask her to go with him.

(a) see Phoebe once more

I decided I'd never go home again and I'd never go away to another school again. I decided I'd just see old Phoebe and sort of say goodby to her and all, and give her back her Christmas dough, and then I'd start hitchhiking my way out West.