Studend (S1) and Seller (S2)
S1: Hello. Can I have that book please?
S2: Hello. I'm sorry, which book do you need?
S1: That, that!
S2: I'm sorry again, but can you name the book please?
S1: Hmm.. Pushkin, "Cloud".
S2: Oh, that's right. Here you are!
S1: Thank you, bye.
S2: Good bye!