You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: Great! Have a great day! Sentence2: Ok, I have 7 listings. Might I suggest the Museum of Classical Archaeology? Sentence3: Yes I am looking for a guesthouse in the north. Can you book it for 2 nights starting Saturday for 1 person? Sentence4: May I suggest the Acorn Guest House? Sentence5: They are located on sidgewick avenue and admission is free. Can I assist with anything else? Sentence6: That sounds like a great place. Sentence7: There are many museums. Do you prefer a certain part of town? Sentence8: I am also looking for a place to stay. Perhaps 4 stars, and I need wifi. Sentence9: I am looking for places to go when I get to town. Are there any good museums? Sentence10: There are a few places that match that description. Do you know what area you'd like to stay in? Sentence11: No. Thank you though, this has been very helpful. Sentence12: Yes I would prefer to be in the west. Sentence13: sure thing all set! reference number is IS8BB29K anything else for you today? Sentence14: That sounds great. Can i get the address and entrance fee? Question: Who has spoken the sentence 3? (A) User (B) System
Answer: (B) System