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

Example Input: Sentence1: I am looking for a train that will depart from Norwich on Sunday Sentence2: Sure thing! Your table is reserved. Your reference number is OY2LNXFW . Is there anything else I can assist you with today? Sentence3: I am traveling to Cambridge and would like to find a local restaurant. I want to arrive by train at noon. Sentence4: TR4202 is the one that leaves at 7:16 and it costs 14.08 pounds per ticket. Would you like me to book it for you? Sentence5: No, that will be all. Thanks! Sentence6: Hi there, let's start with the train arrival, where would you be travelling from? Sentence7: How about 7:16? What is the price? Sentence8: The copper kettle will be fine. Yes please book a reservation. Sentence9: Goodbye and have a good day. Sentence10: Yes that would be great. I am also looking for a place to dine for the night. Do you have any suggestions? Sentence11: Is the restaurant moderately priced? If so, please book a table for 5 at 18:00 and send me the reference number. Sentence12: My recommendation would be the Ugly Duckling, a Chinese restaurant in the centre of town. It is located at 12 St. Johns Street City Centre. Sentence13: No, I'm sorry the ugly duckling is in the expensive price range. The copper kettle serves british food and is moderately priced. Would you like a reservation for it? Sentence14: There are trains every hour on the :16 that will get you there by noon, beginning at 5:16. Which would you prefer? Question: Who has spoken the sentence 12? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Pick any of them, please. Book it for 6 people and 3 nights, starting thursday. Sentence2: I need something with free parking and a 4 star rating. Sentence3: I have 24 guesthouses. Let's narrow it down a bit. Do you have a price range? Sentence4: I am showing 18 colleges. Is there a certain area of town you would like? Sentence5: What is the postcode of Corpus Christi? Sentence6: Booking was successful. Reference number is : 2WPLODLS . is there anything else i can help you with? Sentence7: Not really. Which do you think would be the most interesting to visit? Sentence8: That cuts it down to 16. I can recommend the Acorn guest house, or do you have a pricerange or area of town you want to stay in? Sentence9: I would suggest Christ's college in the city centre or Corpus Christi college in the west. Christ's college is free and Corpus Christi costs 2 pounds? Which do you want? Sentence10: Hello, any interesting colleges in town? Sentence11: Their postcode is cb21rh. Can I assist you with anything else? Sentence12: I am looking for a guesthouse to stay in. Question: Who has spoken the sentence 11? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Allenbell is cheap and 4 stars with internet and parking located at 517a coldham lane, cb13js. Phone number is 01223210353. Can I book a room for you? Sentence2: Thank you for using the service today. Sentence3: I am looking for a museum to visit? I'm pretty excited to be coming in a few weeks. Sentence4: Let's stick with the east Sentence5: Great! Can I get the address and phone number? Sentence6: Is there a certain area you prefer? Sentence7: Their address is the old pumping station, cheddars lane, cb58ld. Their phone number is 01223368650. Will that be all for today? Sentence8: Yes, please book it for 4 people and 3 nights starting from Saturday. Sentence9: we have several including the museum of technology. would you like to purchase tickets? Sentence10: cambridge museum of technology is in the east side of town. Sentence11: Thank you, that is all. Goodbye. Sentence12: You are booked, the reference number is X3YRQRDQ, can I assist with anything else? Sentence13: What area of town is that in? Sentence14: I'm also looking for a cheap guesthouse with free parking and free wifi. Question: Who has spoken the sentence 7? (A) User (B) System
Example Output:
Answer: (B) System