1 A: I wonder if you could help me?
B: b Of course, what’s the problem?
2 A: I’m looking for a book about theatre.
B: a Do you know the title and author?
3 A: Would you like to reserve the book?
B: b Yes, that would be great.
4 A: When will the book be back in?
B: b I don't really know.
5 A: Can I see your library card, please?
B: a Here it is.