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

Sentence1: Alright. Enjoy your stay in Cambridge! Sentence2: Thank you. Have a great day. Sentence3: The train that arrives closest to 16:45 is best. I just need to know what time it leaves and arrives. Oh and of course it's ID. Sentence4: Yes. I am looking for a place to go in the west part of town. With preference to college. Sentence5: There are 6 days that arrive before 16:45 on this day. Did you have any other preferences? Sentence6: I am looking for information in Cambridge. I need a train ticket. Can you help? Sentence7: In the west part of town Clare College. The entrance fee is 2.50 pounds. Sentence8: Great that's all the information I need! Sentence9: Certainly. What is your departure location and your arrival location? Sentence10: It has been my pleasure. Feel free to contact us with any other questions you may have in the future. Sentence11: I would like to depart from London Liverpool Street and arrive in Cambridge. I would like to leave Sunday and arrive by 16:45? Sentence12: Of course! That will be TR6578 leaving at 13:39 and arriving at 15:07. The price is 13.28 pounds and it's an 88 minute duration. May I help with anything else? Question: Who has spoken the sentence 5? (A) User (B) System
Answer: (B) System

Sentence1: Galleria serves European food and is in the centre part of town and has a moderate price range. Sentence2: No restaurants serving australasian food can be found. May I find another type restaurant for you? Sentence3: Looking for someone that serves Australasian food? Sentence4: How about European food? Question: Who has spoken the sentence 3? (A) User (B) System
Answer: (B) System

Sentence1: You're welcome! Have a great time. Sentence2: No, that should be it. I really appreciate your help! Sentence3: I need the phone number and location of the nearest Red Lobster in the downtown Cambridge area. Sentence4: Thank you for your quick response. Sentence5: You are very welcome please let us know if we may help with anything else. Sentence6: I'm sorry, could you please repeat your request? There seems to be an error. Sentence7: Your booking is complete. The car type is a yellow tesla and the contact number is 07556741489. Sentence8: I need a taxi,from darrys cookhouse and wine shop and go to restaurant two two and leave at 9 00 Question: Who has spoken the sentence 3? (A) User (B) System

Answer: (B) System