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

Example Input: Sentence1: How about an expensive restaurant that serves British food? Sentence2: Cineworld sounds perfect. What's their postal code? Sentence3: The postal code is cb17dy. Can I get you anything else? Sentence4: There are six expensive British restaurants in Cambridge. Do you have a preferred section of town? Sentence5: Have a good time! Sentence6: It's all new to me. Could you recommend one? Sentence7: Sure thing, we have the cineworld cinema located at Cambridge leisure park, Clifton way. Sentence8: Absolutely, I recommend the Cambridge Chop House at 1 Kings Parade in the centre of town. This is a highly recommended British experience by locals and tourists a-like. Sentence9: No, that'll be all. Thank you for all of your help today. Sentence10: I am sorry but there are no restaurants matching your requests. Would you like me to search for a different food type? Sentence11: Great. Could you also help me find a cinema in the south of town? Sentence12: Hello, I am trying to locate a restaurant that serves northern European food, and I would prefer a more elegant setting. Question: Who has spoken the sentence 3? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Graffiti sounds good. I actually need that reservation for 5 people at 20:00 on Wednesday. Can I have the reference number for that? Sentence2: There are two trains that would work. One arrives at 07:07 and the other arrives at 01:07. Which one would you prefer? Sentence3: I would recommend Graffiti. It is a bit expensive, so if you want something moderately price there is also Saint Johns Chop House. Sentence4: Great, thanks! That's all I needed right now! Sentence5: Alright, I've booked a train for your group, the reference number is AOIMGBHK, and there will be an 83 GBP fee at the station. Sentence6: What time would you like these reservations? Sentence7: I need to find a British restaurant in West Cambridge. Sentence8: i can definitely do that, how many tickets would you like? Sentence9: No, can you recommend a favorite? Sentence10: I would also like a train departing from london liverpool street and arriving in Cambridge at 09:00 on the same day. Sentence11: Please book 2 tables for 8 people on friday also i need train tickets for 8 people. Sentence12: There are multiple options for you. To narrow them down what price range do you have in mind? Sentence13: Can you book the train that arrives at 07:07 that one would work great. I need the reference number as well. Sentence14: it's for the same group of people Sentence15: Booking was successful. The table will be reserved for 15 minutes. Reference number is : YYPPDY56 . anything else i could help you with? Sentence16: You're welcome. Have a great day. Question: Who has spoken the sentence 11? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Sure the address is jesus lane and the phone number is 01223452587, there is no entrance fee's either. Sentence2: All Saints Church is in the centre area and has free admission. Sentence3: I can help you with that. What type of attraction are you looking for? Sentence4: Sure, can you get me the information? Sentence5: i am looking for a place to stay. The hotel should be in the north and should include free wifi. Sentence6: Can you tell me the address and phone number to the All Saints Church. Sentence7: Sure thing! How many people will be staying, what day to you want your stay to start, and how long? Sentence8: Cool. Can you have a taxi pick me up at 19:00 at the hotel and take me to the attraction? And i'll need car and contact info Sentence9: 1 people, 4 nights starting monday. Thanks. Sentence10: How about all saints church? Sentence11: You are welcome. It was my pleasure to help you. Goodbye from the Cambridge TownInfo centre. Sentence12: Booking was successful. Reference number is : 3AHJV6HE . Sentence13: I would like something with architecture I think. Sentence14: I think that's all I need for today. Thanks for the help. Goodbye. Sentence15: A grey skoda is booked for you and can be reached at 07908464807. How else can I help? Sentence16: Does it have 4 stars? If so, go ahead and book it! Sentence17: The Archyway House is a guesthouse in the north with free internet and parking. Would you like me to book for you? Sentence18: I am also looking for an attraction in the middle of town. Question: Who has spoken the sentence 4? (A) User (B) System
Example Output:
Answer: (A) User