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

Example Input: Sentence1: You are very welcome. Goodbye. Sentence2: I am looking for an expensive restaurant in the east part of town. Sentence3: Is there anything else? Sentence4: What is the phone number for Yu Garden? Sentence5: yu garden is on the east side, would you like the phone number? Sentence6: The phone number for Yu Garden is 01223 248882. May I help you with anything else? Sentence7: No, I think that's it. Thank you for your help. Sentence8: I have found several. Would you like British, Indian, gastropub, or Chinese? Sentence9: There are no other types of expensive restaurants in the east, would you like to try another area? Sentence10: Is there another chinese restaurant in the east? Sentence11: Yu Garden is the only Chinese restaurant on the east side of town in the expensive price range. Sentence12: No, that's okay. What Chinese restaurants are there on the east side? Question: Who has spoken the sentence 11? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: There are 2 expensive French restaurants. Restaurant Two Two, and Cote. Which would you like to book? Sentence2: No, that's everything I needed today. Thank you. Sentence3: Are you able to find me a french expensive restaurant? Sentence4: You're quite welcome! Thanks for contacting the Cambridge TownInfo Centre and have a great day! Sentence5: I like the sound of Restaurant Two Two, could you give me their postcode, address and phone number? Sentence6: Restaurant Two Two is located at 22 Chesterton Road, Chesterton. Their postcode is cb43ax. You can reach them at 01223351880. Any other information I can provide? Question: Who has spoken the sentence 5? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: I just need a phone number, thanks Sentence2: That is all I needed. Thank you for your help. Sentence3: You're welcome. If you ever need anything else just let us know. Sentence4: The number is 01223245151. Can I help you with something else? Sentence5: Addenbrookes Hospital is located at Hills Rd, Cambridge, is there a particular department you're looking for? Sentence6: Thanks again. Goodbye. Sentence7: welcome. at your service next time Sentence8: Yes, I am looking for a hospital that is here in town. Question: Who has spoken the sentence 6? (A) User (B) System
Example Output:
Answer: (A) User