The first time I talked to Bertrand of the Book, he gave me his schtick about his order, "The Heroes from the Books". "I am Bertrand, a humble crusader in service to the tales, words and rhymes."
When that dialog ended I talked to Bertrand of the Book a second time (opened a new dialog).
The second dialog was that of Silas Sparrowbroth, proprietor of the Open Door Inn. "Hello friend, the Open Door is always open to you. Need anything at all? I am more than happy to help".
When that dialog was ended I talked to him a third time. I got the original Bertrand of the Book dialog.