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

Example Input: Sentence1: Hi, I just had a fight with someone regarding an automobile accident we had and I need to contact the police! Sentence2: I have the parkside cambridge police telephone 01223358966. Sentence3: always welcome. at your service Sentence4: Thank you, Goodbye Sentence5: I'm not sure where you are, but the police postcode is CB11JG. Sentence6: Can I get the zip code or postal code for the area I'm in right now? Question: Who has spoken the sentence 3? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Taj Tandoori is an expensive Indian restaurant in the South. Would you like more information on them? Sentence2: I'm looking for an expensive restaurant in the south part of town Sentence3: Thanks for your call. Goodbye! Sentence4: Thank you goodbye. Sentence5: May I have their address and phone number? Sentence6: chiquito restaurant bar is located at 2G Cambridge leisure park cherry hinton road cherry hinton. Its phone number is 01223400170. Would you like anything else? Sentence7: Yes. chiquito restaurant bar serves mexican food in the expensive price range and is located in the south part of town. Sentence8: Is there anything else? Question: Who has spoken the sentence 7? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Great. Can you please give me the travel time and price? Sentence2: I'm actually in need of a train leaving Thursday after 16:00 from Cambridge to London Kings Cross. Can you find me one? Sentence3: Thank you very much. Sentence4: Yes, the travel time is 51 minutes, and the price is 23.60 pounds. Sentence5: Certainly, the earliest train by your specifications is TR1791, leaving at 17:00 and arriving at 17:51. Would you like to book that train? Sentence6: Your very welcome! Have a nice day! Sentence7: Okay. Thank you again. Sentence8: Thank you! That's all I needed. Question: Who has spoken the sentence 1? (A) User (B) System
Example Output:
Answer: (B) System