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

Example Input: Sentence1: Hello, I'm looking for an Italian restaurant on the East side. Thank you! Sentence2: Is this restaurant in the moderate price range? Sentence3: Let me know what else you need . Sentence4: Have a nice day then! Sentence5: Thank you for your help. Bye. Sentence6: Yes book a table for 8 on sunday at 19:30 please. Sentence7: No I will call back thank you. Sentence8: Can you find another restaurant int he same area and price range for me? Sentence9: I did not say to book rajmahal. What type of food does it serve? Sentence10: I was able to book rajmahal, reference number is KSFSKIC1 Sentence11: The address and phone for the Rajmahal is 7 Barnwell Road Fen Ditton cb58rg, 01223244955. Enjoy our city. Sentence12: They serve Indian food. Sentence13: Your reservation is made. The number is KSFSKIC1 . Sentence14: If there are not any Italian restaurants available in the area that are moderately priced, Rajmahal will be fine. Sentence15: I hope to. Goodbye. Sentence16: I show one called the PIZZA HUT FEN DITTON that serves Italian style food and is located on the east side in the Cambridge Retail Park Newmarket Road Fen Ditton Sentence17: It is listed in the moderate range. Would you like to book a reservation? Sentence18: I'm sorry, we were not able to book a table at that restaurant. Would you like me to find another restaurant? Question: Who has spoken the sentence 12? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: I have a train leaving at 18:11. Will that do? Sentence2: You're welcome. Have a nice day. Sentence3: You train has been booked. Total fee is 19.6 GBP which is payable at the station. Your reference number is 5PVB9XYJ . Sentence4: Arrival time does not matter, just leave after 17:30 Sentence5: Milton Country Park is in the north and has free admission. Sentence6: Is there a time you would liek to arrive by? Sentence7: Hello, I'm looking for a place to go in the north. Could you suggest some places? Sentence8: That would work. Can you book that please? Sentence9: Perfect! That is all I needed. Thank you for the help. Goodbye! Sentence10: I need to book for two people and I need the reference number. Sentence11: Can I get the phone number please? Sentence12: Absolutely. Their phone number is 01223420060. Is there anything else I can assist you with? Sentence13: I'm leaving Kings Lynn on Wednesday. Sentence14: Yea I also need a train that goes to cambridge and should leave after 17:30. Sentence15: How many people would you like to book? Sentence16: What day will you be traveling, and where would you like to depart from? Question: Who has spoken the sentence 2? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: I want to leave the hotel at 23:15, a midnight swim would hit the spot. Sentence2: Can you find me a spot to stay with free parking and a 4 star rating? Sentence3: Can I look up anything else for you? Sentence4: No but I do need the phone number and address. Sentence5: I have 4 different swimming pools in town. Is there an area of town you'd like one in? Sentence6: Booking completed! Booked car type : black volvo Contact number : 07411725780 Sentence7: I have no preference. Can you pick one for me? I'll need the postcode and phone number please. Sentence8: What time would you like the taxi? Sentence9: Thanks. Can you get me a taxi between the guesthouse and the swimming pool please? Sentence10: Is it a guesthouse and in the moderate price range? Sentence11: Have a nice day. Sentence12: I also need the name of a swimmingpool in town. Sentence13: No that's all, thank you. Sentence14: Sure, the address is 52 gilbert road and the phone number is 01223575314. Can I help you with anything else? Sentence15: That is all I need. Sentence16: Yes it's a moderately priced guesthouse located in the north. Would you like me to book you a room? Sentence17: parkside pools is located in the centre. The phone number is 01223446100 and the postcode is cb11ly. Sentence18: The Archway House is a four star hotel with free parking. Will that work? Question: Who has spoken the sentence 11? (A) User (B) System
Example Output:
Answer: (B) System