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 not looking for British, I am looking for scottish food. Sentence2: I am looking for something in centre of town then Sentence3: I'm sorry but there are no moderately priced Scottish restaurants in town. Would you like a different type of food? Sentence4: I've booked your reservation. Is there anything else you need? Sentence5: Yes I have many moderately priced venues in the center of town serving British food if you like. Sentence6: I am looking for a moderately priced Scottish restaurant Sentence7: I'm so sorry but it seems that I don't show any that will suit what you are looking for. Would you like to try a different price range or type? Sentence8: There is la tasca. They are located at 14 -16 Bridge Street. Would you like to book it? Sentence9: Can I have a reference number please? Sentence10: Thank you too, good bye. Sentence11: Thank you. Have a lovely day. Sentence12: Yes, it's XXNQ81IE . Sentence13: Yes, Could you look for a Spanish restaurant instead? Sentence14: Yes please. Could you give me a table for tuesday at 12:00 for 2 people please. Question: Who has spoken the sentence 12? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: I need to find a hospital nearby that has a hepatobillary and gastrointestinal surgery referral center Sentence2: No, that's it. Thanks! Sentence3: No, I just need the postcode. Sentence4: You're very welcome. Have a great day! Sentence5: Certainly. The postcode is CB20QQ. Anything else I can help you with today? Sentence6: Addenbrookes Hospital located at Hills Rd, Cambridge has that department. Would you like the phone number to that direct department? Question: Who has spoken the sentence 5? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Contact us anytime. Good bye. Sentence2: Booking was successful. Your reference number is ZP33SYC4 . Will that be all? Sentence3: The phone number is 01223324600. Perhaps they can inform you how much the entrance fee is. Sentence4: it is an expensive hotel in the centre. can i give you their contact? Sentence5: Ok if you read carefully, I also asked for the phone number please. Sentence6: The entrance fee is unknown. Sentence7: There is one nightclub, The Place, would you like their information? Sentence8: Actually, I am ready to book. Can you book the Gonville Hotel for 3 people for 5 nights, starting Thursday? Sentence9: i am looking for the gonville hotel Sentence10: Please provide the entrance fee and phone number for me Sentence11: I'm actually looking for something in the South. If there are no boat attractions there can you find me a nightclub? Sentence12: Thank you goodbye Sentence13: I would also like to find a boat attraction. Sentence14: There are four. One in the east, one in the north, and two in the centre. Which would you prefer? Question: Who has spoken the sentence 3? (A) User (B) System
Example Output:
Answer: (B) System