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

[Q]: Sentence1: There is one concert hall in town, The Man on the Moon, located at 2 norfolk street in the centre of town. Do you need more information? Sentence2: Can you make a recommendation and please provide the entrance fee, phone number, and postcode. Sentence3: Can you help me find a concert hall? Sentence4: Cafe Jello Gallery Phone is o12233289438 and is on 13 Madalene treet Sentence5: Yes, I would consider a museum. Sentence6: great, there are 7 museums in the west. Sentence7: I need a concerthall on the west area of town. Sentence8: I am sorry I have only one listing for the city center. Would you consider other attractions? Question: Who has spoken the sentence 2? (A) User (B) System
[A]: Answer: (A) User

[Q]: Sentence1: I need help, i just been the victim of a robbery. Sentence2: You are most welcome! Sentence3: Sure, here it is: Parkside, Cambridge. Sentence4: I am not hurt but I need to get in touch with the police, can you send me the address? Sentence5: Are you hurt? Sentence6: Thank you for your help Question: Who has spoken the sentence 4? (A) User (B) System
[A]: Answer: (A) User

[Q]: Sentence1: Certainly. What type of food interests you? Sentence2: There are 14 expensive Indian restaurants. Which area do you prefer? Sentence3: I like ethnic food, particularly Indian food. Sentence4: I'm looking for a place to dine. Sentence5: Thank you and enjoy your stay in Cambridge! Sentence6: Yes, Please book 5 people at 18:30. I also need the reference number. Sentence7: Area does not matter to me. Please Book it for 5 people at 19:30 on Wednesday. I also need the reference number. Sentence8: The restaurant should be in the expensive price range and should serve indian food. Sentence9: Your booking was successful. The table will be reserved for 15 minutes. The reference number is XOT3L3NR . Sentence10: Great, I have a bunch of options for you. Do you have a certain area and price range you are looking for? Sentence11: Thank you, good bye! Sentence12: I'm sorry, sir, I'm having trouble making that booking. Would you like to try for a different time or a different day? Question: Who has spoken the sentence 6? (A) User (B) System
[A]:
Answer: (A) User