M: Could I trouble you for another cup? F: Certainly. [The waitress/host wouldn't ask how the customer would like it; we always want it the same way again.]
M: You sure make a nice cup of coffee. F: Thank you. I'm very glad to hear it.
No. 2
M: Where can I find the book on biofuel? F: It's in the stacks. Please fil
"Just like it is" would usually be taken as meaning "black," "or no cream or sugar." Your follow up remark suggests that you intend to explain that you mean it as a compliment. This is okay, if it's your intention.
I think the "very" is overkill. "I'm glad you like it," might be more natural.
I'd say "a book on biofuel." "The" implies there's only