Themselves, that’s the answer I believe.
Answer:
"I'm going to see The Great Gatsby at the cinema", said Dave.
"Have you read the book?", asked Julia.
"I haven't", said Dave.
"It's really good, i can lend it to you", said julia.
"That's very kind of you Julia", said Dave
Explanation:
Cell phones, comes the social cost of communication, and how people are more and more unable to physically communicate face to face as compared to behind a screen.