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

[Q]: 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
[A]: Answer: (A) User


[Q]: Sentence1: Can you check the availability at the University Arms Hotel for five people? Sentence2: You are welcome. Sentence3: Sure thing! Your reference number is LW8PBD97 . Sentence4: Thursday please. Sentence5: Thank you so much, that is all that I need for now. Have a wonderful day. Sentence6: What day would you like to book? Sentence7: Actually for 5 nights and there will be 5 of us staying Sentence8: For just one day? Question: Who has spoken the sentence 3? (A) User (B) System
[A]: Answer: (B) System


[Q]: Sentence1: What's the name of the Italian place? Sentence2: Sure, it is in the centre area on trinity lane, postal is cb21tt, can I help with anything else? Sentence3: No, that takes care of everything! Thanks! Sentence4: book a table for 7 at 14:45 on saturday and get me a reference number Sentence5: Booking was successful. The table will be reserved for 15 minutes.Reference number is : GW3LQPRE . Sentence6: I also need the area and address of an attraction called Old Schools please. Sentence7: I found Prezzo on 21 - 24 Northampton Road. Would you like me to book a table for you now? Sentence8: have 2 listings one for meghna and one for prezzo. Sentence9: Sure, there are three: British, Indian and Italian are their respective cuisines. Sentence10: I would like it to be Italian, and in the West please. Sentence11: Hello, I'm in the west and I am looking for a restaurant in the moderate price range. Can you please help me? Sentence12: You're welcome! Have a great day! Question: Who has spoken the sentence 11? (A) User (B) System
[A]:
Answer: (B) System