You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
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Question: Sentence1: I am planning a trip in Cambridge and need a place to stay with free parking. Sentence2: Excellent. Can I book that for 2 people for 2 nights starting on Tuesday Sentence3: I have many different options available. Let me ask, do you have a certain price range or area in mind? Sentence4: Thanks i will find you one.Thanks a lot Sentence5: I have no particular price range, but would like a guesthouse in the north part of town. Sentence6: That narrows it down to about 9 different options. Most offer both free parking wifi. If you would like my personal recommendation, I would say go with the Hamilton Lodge. Sentence7: Booking was successful. Reference number is : 152UJWIK . anything else today? Sentence8: Yes, I need to find a train on Tuesday from Cambridge to London Liverpool Street. Question: Who has spoken the sentence 4? (A) User (B) System

Answer: Answer: (A) User

Question: Sentence1: Would that be London Liverpool or London Kings Cross? Sentence2: We don't have any trains going from Ely to London Liverpool or London Kings Cross. Do you need anything else? Sentence3: I will be leaving from Ely and going to london. Sentence4: Are you sure you don't have a preference? Sentence5: Either one is fine with me. Sentence6: On Saturday I need a train that will arrive by 21:45. Sentence7: Yes I'm sure. I need to book that for 5 people. Sentence8: Can you tell me where you will be departing from and heading to? Question: Who has spoken the sentence 6? (A) User (B) System

Answer: Answer: (A) User

Question: Sentence1: Okay I was able to get you into the Zizzi Cambridge and your reference number is GI0FZMKL . Sentence2: Sure, there are 9 restaurants to choose from. Did you have a price range in mind? Sentence3: Okay thank you very much for your help. Sentence4: Can you find me an italian restaurant in the centre? Sentence5: Yes please, same price range as before. Sentence6: You are welcome. Enjoy your lunch. Sentence7: Yes, please book ask for 4 people at 12:15 on monday. Sentence8: Okay. Don't hesitate to call us if you need anything else. Sentence9: I'm looking for something on the cheap side, please, although I'd like to get good value for the money. Sentence10: Thank you. I will. Sentence11: There are three Italian restaurants in the center in the cheap range. They are pizza hut city centre, ask, and zizzi Cambridge. Which do you prefer? Sentence12: I would recommend ask as it is a nice place. Sentence13: Any of them will be fine. As long as it's cheap. I need a table for 4 on monday at 12:15 please. Sentence14: I'm sorry but I couldn't book you there. How about another restaurant? Question: Who has spoken the sentence 11? (A) User (B) System

Answer:
Answer: (B) System