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

Example Input: Sentence1: The hotel should be in the moderate price range and should include free wifi. Sentence2: Booking was successful. Reference number is : WJFFGVWD . Is there anything else I can help you with? Sentence3: I've found several hotels in the moderate price range. Is there a specific area of town you're looking to stay in? Sentence4: How about the Acorn Guesthouse? Free wifi and moderate price range. Sentence5: Sure, book me for 2 people for 5 nights starting on Monday? Sentence6: That will be all. good bye. Sentence7: Yes, I'm looking to stay in the north. Sentence8: I am actually looking for a hotel. Is the Acorn Guesthouse listed in that type? Sentence9: No, it is not. How about Ashley hotel? Sentence10: I'm looking for lodgings that are moderately priced. Sentence11: Good bye, enjoy your stay. Sentence12: I've found 11 possibilities for you. Would you prefer a guest house or a traditional hotel? Question: Who has spoken the sentence 4? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: it is located at Thompsons Lane Fen Ditton and you can reach them at 01223 362525 . Sentence2: La mimosa serves mediterranean food in the centre of town. Would you like their information? Sentence3: You're welcome, goodbye Sentence4: Yes, I'd like the address and phone number please. Sentence5: looking for mediterranean food Sentence6: Thank you! Goodbye. Question: Who has spoken the sentence 4? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Okay great. Can you help me make a booking for 6 people please? Sentence2: Yes, with a star of 4 please. Sentence3: You are booked as requested, the reference number is 5ROZN3ZO, any further questions? Sentence4: thank you and enjoy your stay in Cambridge! Sentence5: Oh my. Are there any moderate-price guesthouses in the east with 4 stars? Sentence6: Yes, please book 6 people for 2 nights beginning friday Sentence7: I need a play to stay in the east in the moderate price range Sentence8: I do not have any 4 star hotels in the east. Would you like to try another area or maybe go with a price range in the East? Sentence9: Hi, I'm looking for a train arriving in Cambridge by 21:15. Sentence10: Yes, I found three. I would recommend Carolina Bed and Breakfast it is moderately priced and located in the East. Would you like a reservation? Sentence11: I will look that up for you,do you want a hotel ? Sentence12: Can you tell me where you will be departing from and what day you would like to travel? Sentence13: I would recommend TR9589 which leaves Norwich at 19:16 and arrives in Cambridge at 20:35. Sentence14: Great!! That's all for now. Thank you so much. Sentence15: Sure, I'll be leaving from Norwich. Oh, and I'd like to travel on Friday please. Sentence16: Booking was successful, the total fee is 105.6 GBP payable at the station. Reference number is : 2CUTCPH6 . Is there anything else I can help you with today? Question: Who has spoken the sentence 2? (A) User (B) System
Example Output:
Answer: (A) User