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 a swimming pool in the same area? Sentence2: I need a place in the east, please. Sentence3: That would be express by holiday inn cambridge. Would you like to book that? Sentence4: No, actually I do need to book the Holiday Inn Cambridge as long as it has free wifi. Sentence5: Um, no thank you. I think that's all I need for today! Sentence6: Thanks, do you know of any colleges near the hotel? Sentence7: Unfortunately I'm not finding any colleges near the hotel on the east side of town. Would you like me to expand my search to another area? Sentence8: The holiday inn cambridge has internet but I do not have any information on whether or not it is wifi or free. Sentence9: Great. Thank you very much for contacting Cambridge Towninfo Centre. Have a great day. Sentence10: Can we go ahead and book that for 5 people for 3 nights starting on Saturday? Sentence11: Can I get the entrance fee and phone number for the Abbey Pool please? Sentence12: We have 5 hotels that meet your request. Is there a specific area you'd like to stay in? Sentence13: Their phone number is 01223902088, and their entrance fee is not listed in our system at this time. Sentence14: Okay, I have you booked for three nights starting on Saturday. Your reference number is PDMS5WA1 . Sentence15: Thank you for using our service. Have we met all of your needs? Sentence16: I'm looking for a hotel in the expensive price range. Internet is not necessary. Sentence17: Yes! The Abbey Pool and Astroturf Pitch is on the east side of town, at pool way, whitehill road, off newmarket road. Can I help with anything else? Sentence18: Ok. That's all I need then. Question: Who has spoken the sentence 13? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: No but I do need a train that will depart from peterborough and should go to cambridge. Sentence2: When would you like to depart or arrive? Sentence3: The ticket price is 16.50 pounds. Would you like me to book that for you? Sentence4: No than kyou. Sentence5: And how much is a ticket? Sentence6: The duration of the train ride is 50 minutes. Sentence7: TR8509 will leave Peterborough at 15:19 and arrive in Cambridge at 16:09. Would you like to book tickets on this train? Sentence8: Ok! Have a great day! Sentence9: Yes, there is. It's located in the centre area and has free admission. Would you like more information about it? Sentence10: Are you sure that there is absolutely nothing else that you need? Sentence11: No, I think I'll hold off on that. That's it for today. Thanks for your help. Have a great day. Sentence12: maybe, what's the duration of the train ride? Sentence13: I need the attraction type and address. Sentence14: I'd like to depart after 15:00 on thursday no preference on arrival. Sentence15: The Scott Polar Museum is a museum located on Lensfield Road. Would you also like their phone number? Sentence16: A friend told me about an attraction called the scott polar museum. Question: Who has spoken the sentence 8? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Great, thanks! That is all I needed for today. Sentence2: Ok, that sounds good, lets book a room please. Sentence3: Certainly, the good luck chinese food takeaway is in the south part of town. Can I book at table for you, if so how many will be dining. Sentence4: It has been my pleasure. We hope you enjoy your time here in Cambridge and feel free to contact us if you need any further assistance. Sentence5: Thank you! I am also searching for The Good Luck Chinese Food Takeaway. Sentence6: Sure thing! I just need to know what day you'll be arriving, how many nights you'll be staying, and how many people are in your party to be able to book. Sentence7: First, I need the price, phone number, and postcode there. Sentence8: I want to book a table for 2 people at 12:30 on sunday. Sentence9: Yes, the acorn guest house is a 4-star place Sentence10: The restaurant has been booked for two people Sunday at 12:30. Your reference code is COB6X9IP . Sentence11: The acorn guest house will meet your needs. Would you like to book a room there? Sentence12: Is that a 4-star hotel? I do prefer a 4-star place. Sentence13: The acorn guest house is located at 154 chesterton road postcode cb41da, phone 01223353888. The price is in the moderate range. Shall I book a room for you? Sentence14: I want to find a place to stay with free wifi. It doesn't have to have free parking though. Question: Who has spoken the sentence 13? (A) User (B) System
Example Output:
Answer: (B) System