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

[Q]: Sentence1: Can you book a table at the Bistro for me? 4 people at 13:30 on Sunday, please. Sentence2: I am looking for a place to eat that's expensive and serves Belgian food. Sentence3: I just need the arrival time and price. Sentence4: I have two, the backstreet bistro and the slug and lettuce. Do you have a preference between the two? Sentence5: Yes, what time do I need to be at the station? Sentence6: How about somewhere expensive in the centre? Sentence7: Booking was successful. The table will be reserved for 15 minutes. Reference number is : NSLKEI1G . Sentence8: I want to leave after 10:30 on Monday. Sentence9: The TR8089 meets your criteria. Would you like to book tickets? Sentence10: You're welcome, have a good day. Sentence11: no such restraunts too Sentence12: Thanks! I also need a train from Cambridge to Ely, please. Sentence13: what time will you be departing? Sentence14: I should be asking you what time you need to be at the station. Sentence15: The arrival time for train TR8089 is 12:07, and it will cost only 4.40 pounds. Is there anything else I can help with? Sentence16: I'm sorry, we don't have any Belgian restaurants. Would you like to try a different type? Sentence17: That was everything. Thanks very much! Sentence18: How about a gastropub restaurant? Question: Who has spoken the sentence 1? (A) User (B) System
[A]: Answer: (B) System

[Q]: Sentence1: I recommend university arms hotel. it is rated 4 stars and is expensive. Their number is 01223351241. Sentence2: Can you help me find a place to eat serving british food in the moderate price range? Sentence3: I have several listings. Please provide the part of town you prefer so I can narrow it down. Sentence4: Ok, can you book a room for our group or are you expecting me to call them? Sentence5: Yes, I'd like a hotel in the same area. Sentence6: In the centre if possible Sentence7: can please provide more information to help us serve you better. Sentence8: No thank you that will be all for today Sentence9: I can book it for you. Sentence10: Yes please, could you book a table for 6 at 16:45 on Wednesday? Could i get a reference number too please? Sentence11: sure I can help you with that, when are you planning your stay? Sentence12: i dont mind any price. Sentence13: How about the oak bistro located at 6 lensfield road. The post code is cb21ab and phone number 01223323361. Can I book this for you? Sentence14: I actually need a moderate hotel in the centre. I don't need free parking. I will need the hotel booked for 6 people, 2 nights, on Wednesday, please. Sentence15: You have your choice of an expensive or moderate price range in that area, do you have a preference? Sentence16: Wednesday, for 2 nights. Sentence17: Ok. I have a table for 6 booked for you at the Oak Bistro. Your reference number is 9SGIM1SR . Is there anything else I could help with today? Sentence18: It needs to be close to my hotel and open late. Question: Who has spoken the sentence 5? (A) User (B) System
[A]: Answer: (B) System

[Q]: Sentence1: We would like a place in the north which includes free wifi and free parking. Can you find something fitting this? Sentence2: The reference number is MNKWT71T . Is there anything else I can help you with today? Sentence3: Yes please make reservations for sunday for 3 people. Sentence4: I have two that match your criteria. I'd recommend the Ashley Hotel on Chesterton Road. Will that work for you? Sentence5: The TR5298 leaves at 17:29. Would you like me to book tickets? Sentence6: Could you please get me three tickets for a train that leaves after 15:45? Sentence7: I would like to leave on Sunday please. Sentence8: What is the reference number? Sentence9: Your booking was successful and the total fee is 24.24 GBP. Will there be anything else? Sentence10: What day would you be needing the train? Sentence11: Hey could you help me figure out the train schedule? I need to go to Cambridge I am leaving from bishops Stanford station. Do you know the times? Sentence12: The train leaving Bishops and arriving in Cambridge has a consistent Sunday schedule. Beginning at 5:29 a.m., a train leaves exactly two hours later all day. Next train 7:29, etc. Sentence13: How many tickets are you looking for? Sentence14: i need tickets for three people. Sentence15: Do you have any preferences for the hotel, like price range or area of town? Sentence16: I also need a hotel for 3 people starting Sunday and for 4 nights. Question: Who has spoken the sentence 13? (A) User (B) System
[A]:
Answer: (B) System