person-to-person

adjectives

involving direct communication or contact between persons or parties
"a person-to-person interview"; "person-to-person telephone calls"
is similar to
concerning or affecting a particular person or his or her private life and personality
"a personal favor"; "for your personal use"; "personal papers"; "I have something personal to tell you"; "a personal God"; "he has his personal bank account and she has hers"

adverbs

(of two persons) in direct encounter
"preferred to settle the matter one-on-one"; "interviewed her person-to-person"