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

Sentence1: The address for that is 6 trinity street. Sentence2: I don't need to make the reservation now. Thank you though. I would like the address for Cambridge Contemporary Art please. Sentence3: Can you help me find a train coming from cambridge leaving on thursday? Sentence4: How many tickets please? Sentence5: I want to arrive by 21:30 if possible. Sentence6: Yes I have many options. What time would you like to leave or arrive by? Sentence7: Train TR3255 is arriving at 21:06,is that okay for you? Sentence8: Thanks for using our service today, glad I was able to assist you. Hope you have a great day. Sentence9: That could work for me. Sentence10: thank you, that will be all. good bye. Sentence11: I will be going to Leichester. Sentence12: There are 202 trains departing Cambridge on Thursday. Where do you plan to head to that day? Question: Who has spoken the sentence 3? (A) User (B) System
Answer: (B) System

Sentence1: I am sorry, but the Leverton House was not available for your party on Tuesday. Would you like me to look for another hotel? Sentence2: In what area would you like? Leverton is in the East, should the hotel be in the same area? Sentence3: Is there another hotel available in the same price range? Sentence4: Hi, I'm looking for a hotel called Leverton House. Sentence5: No, you said Leverton wasn't available. Please just book a different hotel in the same price range as Leverton. Thanks. Sentence6: I have booked you a room at the Alexander Bed and Breakfast at 56 Saint Barnabas Road. Your reference number is JGTE0KGB . Is there anything else today? Sentence7: No, I don't care about the area, just the price. Recommend me one? Sentence8: You're welcome. Good-bye. Sentence9: The Leverton House is a guesthouse in the east of the city. Their phone number is 01223292094. Sentence10: Yes Leverton is in the cheap price range. Would you like me to book it for you? Sentence11: Thank you. Please book a reservation for 6 people for 2 nights starting tuesday. Sentence12: That will be all, thank you. Question: Who has spoken the sentence 1? (A) User (B) System
Answer: (B) System

Sentence1: How about 17:15? Sentence2: There is la margherita, an italian restaurant and thanh binh, a vietnamese restaurant. Sentence3: I wasn't able to make that reservation. Would you like to try a different time? Sentence4: Churchill college is on the west side on Storey's way. There is no entrance fee. The phone number is 01223336233. Anything else I can tell you? Sentence5: How many people will be dining, and for what date and time? Sentence6: I think that was it. Thank you for your help! Sentence7: You're welcome. Have a great day! Sentence8: Great. Can you also tell me about Churchill College? I am thinking of visiting that. Sentence9: That booking was successful. Your reference number is XF1JEIBG . Sentence10: Yes, I am interested in the one that serves Italian food. Sentence11: There will be 4 people and I would like to reserve it for Wednesday at 6:15. Sentence12: I am looking for a restaurant in West Cambridge, in the cheaper price range please. Question: Who has spoken the sentence 4? (A) User (B) System
Answer: (A) User