You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
--------
Question: Sentence1: Howdy, I'm looking for a place to stay. I don't care about internet. Sentence2: I booked you at city centre north b and b. Your reference number is Y87Q565O . Do you need anything else? Sentence3: How about the worth house? It is a 4 star guesthouse and has free internet and free parking. Sentence4: You are so welcome. Enjoy your stay in Cambridge. Sentence5: Would you like me to book it for you? Sentence6: There are 33 hotels in Cambridge. What price range would you like, and what area? Sentence7: Yes and make it for Friday for 2 days, and 2 people. Sentence8: yes I like that one with the free wifi. Sentence9: I would like a cheap hotel in the north please. Sentence10: Thank you so much for your help. Question: Who has spoken the sentence 1? (A) User (B) System

Answer: Answer: (B) System

Question: Sentence1: The area doesn't matter. I would like free wifi though, if possible. Sentence2: Not really, how about 4 star? Sentence3: Do they also have free parking? Sentence4: I have many options. Do you have a preference for the area you would like to stay in. Sentence5: There are several moderate 4-star places to stay throughout town, but they are all guesthouses. Would a guesthouse work for you? Sentence6: acorn guest house does have free parking,would you like that one? Sentence7: Dojo Noodle Bar is a nice cn I book you a table ? Sentence8: I'm looking for a moderately priced, 1-star place to stay. Sentence9: No, I don't need a hotel booking at this time. I'd like to find a place to dine on Sunday. Sentence10: Unfortunately we do not have any moderately priced 1 star hotels in Cambridge. I'm sorry! Cityroomz has 0 stars in the centre, does that work? Sentence11: Would you like me to reserve the acorn guest house for you? Sentence12: Yes. I also need to find a place to dine that is in the center and the same price range as the hotel. Question: Who has spoken the sentence 9? (A) User (B) System

Answer: Answer: (B) System

Question: Sentence1: Thanks. I am also looking for a hotel in the north. I want something with a 3 star rating. Are there any available? Sentence2: There are four theatres in that area. Cambridge arts theatre is a nice one in that area. Sentence3: It will just be me. I will be arriving Tuesday and staying for 3 nights. Sentence4: Booking completed! Booked car type: grey volvo Contact number : 07836799900 Sentence5: Booking was successful. Reference number is 9MSRK9GO . Do you need help with anything else? Sentence6: Wonderful. Can you get me the address and postcode? Sentence7: I will need a taxi to go from the theatre to the hotel. Can you help me with that? Sentence8: I would like the taxi to be there by 04:30. Also could i have the contact number of the taxi? Sentence9: Great enjoy your visit! Sentence10: Thank you! That is all that I need. Sentence11: That sounds perfect. Yes, I would like to book a room please. Sentence12: Sure, the address is 6 saint edward's passage and the post code is cb23pj. Sentence13: I don't mind something a bit pricey, and I definitely need wifi. Sentence14: Yes I have two both in the moderate price range. Any preference for amenities? Sentence15: When will you be arriving and how many nights will you be staying? How many in your party? Sentence16: I sure can. What time would you like the taxi be there? Sentence17: Hamilton Lodge has free wifi and is in the moderate price range. Would you like to book a room? Sentence18: Are there any theatres in Cambridge, particularly close to the city centre? Question: Who has spoken the sentence 12? (A) User (B) System

Answer:
Answer: (A) User