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'd like to find a 4 star guesthouse, please. Sentence2: The Place is a great nightclub in the south, located at 22 sidney street, post code cb23hg. The phone number is 01223324600. Is there anything else I can help you with? Sentence3: Yes, book it for me please. Thank you. Sentence4: It does not really matter. It will be just me starting on Friday for 3 nights. Sentence5: What attractions do you have in the south? Sentence6: I have found 18 guesthomes that match the criteria you listed. Is there any other specifications you have about the guesthouse (area,price range,etc) that you would like to tell me? Sentence7: Unfortunately, the booking was unsuccessful. Would you like to shorten your stay or try another place to stay? Sentence8: arbury lodge guesthouse is a moderately priced guesthouse in the north. How does that sound? Sentence9: The arbury lodge guesthouse is in the moderate price range. Sentence10: We have 8 types of attractions in the south? What type are you looking for? Sentence11: Sure, is there an area you prefer? Sentence12: I have to have free wifi Sentence13: I would like a room that is close to the nightclub for atleast 1 night up to 3 nights? Sentence14: Hmm, I'm not really sure. Do you happen to have any nightclubs? If not, what are my choices? Question: Who has spoken the sentence 6? (A) User (B) System
[EX A]: Answer: (A) User

[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: Not that is it thanks. Sentence2: Yes, please. Do either have free wifi? Sentence3: Wonderful. Your room has been booked for 3 nights. Your reference number is HH78SJFP . Is there anything else I can help with? Sentence4: Thank you if you need any more help please let us know. Sentence5: Both of the guesthouses have free wifi and free parking. I would recommend the Aylesbray Lodge Guest House due to it being 4 stars. Sentence6: Great! Can you book that for me? Sentence7: I can help. We have 18 moderately priced hotels. Do you have any additional preferences? Sentence8: I'm looking for a moderately-priced place to stay. Sentence9: Yes, tell me what day are you arriving, how long is your stay, and for how many people? Sentence10: I have 2 Guesthouses available for what you need. Do you want information on one of them? Sentence11: I prefer the south part of town if you have anything. Sentence12: There wilI be 4 of us arriving on Saturday, and staying for 3 nights. Question: Who has spoken the sentence 3? (A) User (B) System
[EX A]:
Answer: (B) System