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

[EX Q]: Sentence1: Thanks, I'm also looking for some places to go in the centre. Sentence2: There are 44 different attractions in the centre. Can you narrow down your choices? Sentence3: Ok. And where are you leaving from? Sentence4: The phone number for All Saints Church is 01223452587 and they are located on Jesus Lane. They do not charge an entrance fee. Can I do anything else for you? Sentence5: I think whatever you think is the best place, just choose that. I am not picky. Sentence6: No, that will be it. Thank you so much for your help! Sentence7: I would want to find a train going to Cambridge. Sentence8: it should arrive by 11:15. get me the price Sentence9: Thank you for using our service! Sentence10: Okay, there are 10 trains available. Do you have a departure or arrival time in mind? Sentence11: The train should leave on wednesday and should depart from ely Sentence12: that sounds lovely, what is their phone number, address and any entrance fee's? Sentence13: TR2006 is leaving at 11:35 and costs 4.40 pounds. Sentence14: Perhaps you would enjoy seeing All Saints Church on Jesus Lane? Question: Who has spoken the sentence 8? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: I can definitely help you out with that. Is there a certain area of town you'd like to stay in? Sentence2: I have booked your stay at the Alexander Bed and Breakfast for Friday for 3 days for 6 people. Your reference number is DJF36WMD . Is there anything else I can help you with today. Sentence3: The train ID is TR9629, leaving at 18:09 and arriving by 19:54. Can you tell me how many tickets you would like to purchase? Sentence4: I'd like one ticket please. Sentence5: I will need to take a train from Leicester on the same day as my hotel booking. Sentence6: I am looking for a cheap hotel with free parking. Sentence7: All trips from leicester cost 37.8 pounds and take 105 minutes. Is there a specific time you would like to depart or arrive by? Sentence8: Alexander bed and breakfast is a guesthouse in town centre in the cheap price range. It has both free parking and wifi. Would you like to book a room? Sentence9: We will be arriving on Friday and staying 3 nights. Sentence10: I will need to know how many nights and what day you will be starting your stay before we finish the booking. Sentence11: I do not. I just need the train ID and what arrival time it has. Sentence12: Alright I've booked you one ticket, the total will be 37.79 and your reference number is PGY0G1J2 . How else can I help you? Sentence13: Sure, you need a taxi to Alexander Bed and Breakfast from where, and do you have an arrival time request? Sentence14: Can you please schedule a taxi to take me from the station to my hotel? Sentence15: Thank you for your help. Sentence16: I need to leave after 17:45 heading for Cambridge. Go ahead and book the closest time and give me the train ID and arrival time. Sentence17: The train arrives by 19:54 and TR9629 is the train id. Sentence18: Is there anything else I can help you with? Possibly entertainment or places to visit on your trip? Sentence19: I would prefer to be in the centre of town, and I need the hotel to include free parking. Sentence20: Yes, please. That sounds perfect. There will be six of us. Question: Who has spoken the sentence 12? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: Yes, I am looking for places to go in the centre area. Sentence2: Yes, please. I need a booking for 4 people and will need the reference number. Sentence3: Yes, please get me their entrance fee and postcode. Sentence4: Yes our family likes to swim! Sentence5: Great! I have those trains up. May I now get where you are traveling to? Sentence6: We have many fine attractions in the center of town. Is there a particular type you're looking for? Sentence7: Their entrance fee is not in our system and they are in cb11ly Sentence8: I am goint to London Kings Cross and should arrive by 21:45. Sentence9: Great! There is just one swimming facility in the central zone: Parkside Pools. Would you like their contact information? Sentence10: I am looking to book a train that departs from cambridge on saturday Sentence11: Thanks, you, too. Sentence12: Have a great day. Sentence13: Would a swimming pool work in its place? Sentence14: I have booked your tickets. Your reference number is GW9K5282 . Can I help with anything else today? Sentence15: Sure, I have a train arriving at 19:51 TR0427. Would you like to book it? Sentence16: Thank you. That's all I need for today. Sentence17: You're welcome! Bye! Sentence18: I would like a mutilple sports attraction please. Question: Who has spoken the sentence 4? (A) User (B) System
[EX A]:
Answer: (A) User