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're very welcome! Is there anything else that I can help you with today? Sentence2: That is all I will need. Thank you for your help! Sentence3: Please book for 4 people at 17:00 on Sunday Sentence4: Thank you for all your help. Sentence5: I need a restaurant. The restaurant should serve indian food and should be in the expensive price range. Sentence6: I will be departing from my house. Sentence7: Pipasha Restaurant fits all of your criteria. Would you like to book a stay? Sentence8: Yes, I'd like a taxi to take me to Pipasha Restaurant and then to Cambridge Punter. I'd like to arrive at Pipasha Restaurant by 17:00. Sentence9: There are 14 expensive indian restaurants in the city. Do you have a preference of location? Sentence10: I am also interested in attractions in the centre. Specifically, I am interested in multiple sports facilities Sentence11: Your table for 4 has been booked. The table will be reserved for 15 minutes. Your reference number is 8OZ8ZF5G . Do you need anything else? Sentence12: The Cambridge Punter looks like a good choice. Want more information? Sentence13: Actually I'll be at the Cambridge Punter, pick me up there. Sentence14: Yes.East-Side London. Sentence15: How about an attraction that has to do with boats? Sentence16: The phone number to the cambridge punter is 07807718591. Do you require assistance with anything else. Sentence17: I have none available in the centre. Would you like a different area or attraction? Sentence18: You are welcome. Please call us back if we can help you any further. Sentence19: What is the address of your house so I can book the taxi? Sentence20: I just need to know where you will be departing from at first to the restaurant. Sentence21: No problem. Your taxi is booked. The car is a red tesla and the contact number is 07610839736. Anything else I can help you with? Sentence22: Yes, can I get the phone number? Question: Who has spoken the sentence 17? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Would you prefer Indian food or Italian food? Sentence2: Curry Prince is a moderately priced restaurant in the east part of town that serves Indian food. Would you like the phone number? Sentence3: I want a moderately priced restaurant in the east part of town. What is the phone number? Sentence4: You're welcome, goodbye. Sentence5: Awesome, thank you! Goodbye! Sentence6: The phone number for Curry Prince is 01223 566388. Sentence7: I don't care. Give me their phone number. Sentence8: Yes give me the phone number. Question: Who has spoken the sentence 7? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: What's their address and star rating? And do they have free parking? Sentence2: OK, and how can I help you? Sentence3: Yes I would like to stay in an expensive hotel in the city center. Sentence4: Your train is booked. Total fee is 76.8 GBP payable at the station. Reference number: L9XGQW87 Sentence5: I am planning a trip in Cambridge. Sentence6: University Arms is available. Sentence7: They do have parking. They are on Regent Street. Can I help you with anything else? Sentence8: What day would you like to leave? Sentence9: University Arms Hotel Star rating is 4. Should i go ahead and book that for you? Sentence10: I found you the TR8290 that leaves at 09:21 on monday arriving at 10:10. Would you like to book this one? Sentence11: arriving at 10:10 is fine.can i get six tickets? Sentence12: Excellent, thanks. Sentence13: I need to find a hotel in Cambridge. Sentence14: no, thanks. does it have free parking and what's the address Sentence15: Great, thank you! I won't be needing anything else! Bye! Sentence16: I need to leave on a Monday please. Sentence17: Let me find one for you. Sentence18: That is the closest train we have to 10:30 Sentence19: Any particular location or price range? Sentence20: Have a wonderful time in town. I am glad to help you from Cambridge TownInfo Centre. Goodbye. Sentence21: I need to book a train for 6 people departing at Cambridge and arriving at Stevenage at 10:30. Sentence22: I need it to arrive at 10:30 actually. Question: Who has spoken the sentence 19? (A) User (B) System
Example Output:
Answer: (B) System