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

[EX Q]: 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
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Howdy, I'm looking for a place to stay. I don't care about internet. Sentence2: I booked you at city centre north b and b. Your reference number is Y87Q565O . Do you need anything else? Sentence3: How about the worth house? It is a 4 star guesthouse and has free internet and free parking. Sentence4: You are so welcome. Enjoy your stay in Cambridge. Sentence5: Would you like me to book it for you? Sentence6: There are 33 hotels in Cambridge. What price range would you like, and what area? Sentence7: Yes and make it for Friday for 2 days, and 2 people. Sentence8: yes I like that one with the free wifi. Sentence9: I would like a cheap hotel in the north please. Sentence10: Thank you so much for your help. Question: Who has spoken the sentence 1? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Have a good day! Sentence2: yes, the nirala is indian restaurant in the moderate price range and in the north. It is located at 7 milton road chesterton and its phone number is 01223 360966. Is there anything else I can help you with? Sentence3: Is there anything else in the moderate price range on the north part of town? Sentence4: I would like a moderately priced restaurant in the north part of town Sentence5: Golden Wok is located in the north part of town and is the moderate price range. Their address is 191 Histon Road Chesterton. Sentence6: No, thank you. That's all I need. Question: Who has spoken the sentence 4? (A) User (B) System
[EX A]:
Answer: (A) User