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

Input: Consider Input: Sentence1: Thats all for today! Thanks so much! Sentence2: TR1039 departs from Ely at 13:35, arriving in Cambridge by 13:52. Does this work for you? Sentence3: Sounds great, can you book it for 7 people for 4 nights starting saturday? Sentence4: The location doesn't matter, but I'd like it to be 4 stars. Sentence5: Thank you I also need to find a cheap guesthouse to stay at. Can you help me find one? Sentence6: Hi, I'm looking for a train going to Ely from Cambridge. Sentence7: Have a nice day. Sentence8: Okay! How about Allenbell? Sentence9: That sounds great. I would like to book it for 7 people. I will also need the reference number Sentence10: You have 9 options available. Would you like to narrow it down by location? Sentence11: Your room has been booked. Your reference number is ELA3CIDM . Sentence12: There are 70 possible trips. You can leave as early as 5:35 and as late as 23:35. The trip is 17 minutes. What time of day would you prefer? Sentence13: I need to leave on Wednesday after 12:00 please. Sentence14: Booking was successful, the total fee is 35.2 GBP payable at the station .Reference number is : JD1P380X . Question: Who has spoken the sentence 5? (A) User (B) System

Output: Answer: (B) System

Input: Consider Input: Sentence1: Cambridge artworks is wonderful! They are located at 5 greens road cb13ef. There phone number is 01223902168. Sentence2: Yes, there are 4 museums. Three are free and one has a 5 pound entrance fee. Are you looking for a gallery? Sentence3: What do you recommend? Sentence4: Can you help me find a place to go in the east? Sentence5: Thank you. That's all I needed. Sentence6: I'm also looking for a place to eat. I don't mind where, but I want an expensive chinese place. Sentence7: Ok. I booked a taxi for you. It is a blue audi and the contact number is 07155610417. Sentence8: You're welcome, goodbye! Sentence9: A recommendation would be fine. Can I get the area they're in and post code? Sentence10: I'd also like to book a taxi between the two places. I'd like to leave the restaurant by 2:30 Sentence11: There are 9 options that fit your criteria. Would you like a recommendation or would you like to narrow it down further? Sentence12: We have 5 very nice attractions in the east, do you have an idea of type of activity that would best match your needs? Sentence13: I recommend yu garden. It is located in the east. The address is 529 Newmarket Road Fen Ditton. Postcode cb58pa. Sentence14: Is there a museum I could go to on that side of town? If so, please provide phone number, address, and postcode. Question: Who has spoken the sentence 3? (A) User (B) System

Output: Answer: (B) System

Input: Consider Input: Sentence1: I'd like an expensive 4 star guesthouse if that is possible. Sentence2: What day will you be staying there? Sentence3: I need a place to stay. I'm looking for a place with 4 stars and free parking. Sentence4: Acorn guest house is a good match. Would you like me to book it for you? Sentence5: Great! What is their phone number? Sentence6: There phone number is 01223694264, they are located at 49 newnham road and best thing is addmisson is free. Can I help you find anything else toay? Sentence7: I have found 19 hotels. Is there a particular area of town and hotel star rating you are looking for? Also price range? Sentence8: Yes, please. Book it as soon as possible. Sentence9: Wednesday for 3 nights and 6 people please. Sentence10: Booking was unsuccessful. kindly book another day or shorter stay. Sentence11: cambridge book and print gallery is a museum found in the Western part of the town. Their postcode is cb39ey. Sentence12: Hi, I want to find out about cambridge book and print gallery please. Question: Who has spoken the sentence 8? (A) User (B) System
Output: Answer: (A) User