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

Example Input: Sentence1: Thank you. May I have a street address for the police station? Sentence2: welcome. at your service next time Sentence3: Thank you goodbye Sentence4: Certainly. Their address is Parkside, Cambridge. Can I assist you further? Sentence5: I want to know where I would find the Parkside Police Station. Could you tell me? Sentence6: Their postcode is CB11JG, you can reach them at phone number 01223358966. Question: Who has spoken the sentence 2? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: I'd like to find a 4 star guesthouse, please. Sentence2: The Place is a great nightclub in the south, located at 22 sidney street, post code cb23hg. The phone number is 01223324600. Is there anything else I can help you with? Sentence3: Yes, book it for me please. Thank you. Sentence4: It does not really matter. It will be just me starting on Friday for 3 nights. Sentence5: What attractions do you have in the south? Sentence6: I have found 18 guesthomes that match the criteria you listed. Is there any other specifications you have about the guesthouse (area,price range,etc) that you would like to tell me? Sentence7: Unfortunately, the booking was unsuccessful. Would you like to shorten your stay or try another place to stay? Sentence8: arbury lodge guesthouse is a moderately priced guesthouse in the north. How does that sound? Sentence9: The arbury lodge guesthouse is in the moderate price range. Sentence10: We have 8 types of attractions in the south? What type are you looking for? Sentence11: Sure, is there an area you prefer? Sentence12: I have to have free wifi Sentence13: I would like a room that is close to the nightclub for atleast 1 night up to 3 nights? Sentence14: Hmm, I'm not really sure. Do you happen to have any nightclubs? If not, what are my choices? Question: Who has spoken the sentence 6? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Yes one in the same area and price range please. Sentence2: I apologize the Bedouin does not have any open seats for that day and time. Would you like me to try another restaurant? Sentence3: I would recommend Papadoux they are very expensive and right in the center of town Sentence4: So happy we could be of service today. Enjoy your time in Cambridge! Sentence5: Yes I am looking for an expensive place to eat that is located in the city center. Sentence6: Okay I was able to book you into the Kymmoy, an expensive Asian restaurant in the center of town and your reference number is YCQWEGOS . Sentence7: Hmm. I feel like discovering something new. Which restaurant would you recommend? Sentence8: There are quite a few restaurants in the center. What kind of cuisine are you interested in? Sentence9: Great! Thank you so much for your help. Sentence10: I'm sorry, Papadoux is not coming up. There is an expensive African restaurant called Bedouin in city centre. Would you like me to try that one instead? Sentence11: Yes, or any in the same expensive range and the centre area. Sentence12: That sounds great. Could you book a table for one at 11:15 on Friday? Sentence13: No thank you for all your help. Sentence14: You're very welcome. Is there anything else I can help you with today? Question: Who has spoken the sentence 13? (A) User (B) System
Example Output:
Answer: (B) System