When Dally calls the Curtis boys' house, his message is quick and frantic. He has robbed a liquor store, and the police are after him. He begs Darry to help him out, and Darry agrees to meet Dally at the old vacant lot.
Dally's phone call to his friends is a sad cry for help; he has realized that his actions have set events in motion which will probably lead to his death. As Ponyboy reflects later in the novel, Dally must have wanted the cops to kill him that night, but even so, Dallas Winston reached out to his fellow gang members for support in his final moments.