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'm sorry. I changed my mind. I don't want a guesthouse. Are there any hotels with 2 stars? Sentence2: Great that was all I needed today, thank you. Sentence3: Is there a particular area you would like to stay in? Sentence4: There isn't a guesthouse with 2 stars and free internet available. Is there another type of hotel I can look up for you? Sentence5: Great Glad I could be of help to you. Sentence6: I have you booked in the Ashley hotel. Your reference number is CW6YMT0B . Is there anything else I can do for you today? Sentence7: No, just any 2-star hotel with free wifi will do. Sentence8: Hi, I need a guest house please. Sentence9: Do you have a specific location you want to be? Sentence10: No, but I need free wifi and I would like a 2 star guesthouse please. Sentence11: I have 3 guesthouses all in the moderate price range. Would you like me to choose one for you? Sentence12: I found 3 for you all in the expensive price range. Can you please give me the details so that I may book it for you? Sentence13: Yes, how about a guesthouse with 3 stars and free wifi instead? Sentence14: I would like it for 6 people for 2 nights starting on Wednesday. Question: Who has spoken the sentence 11? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Yes, there are 2 in the north, 1 in the east and 1 in the centre. Which would you be interested in? Sentence2: Train TR8464 leaves at 11:21 and arrives at 12:10. Would you like to book that one? Sentence3: Actually none of the pools in our database have an entrance fee listed. Is there anything else I can help you with? Sentence4: Im leaving from Cambridge and going to Stevenage. Sentence5: I'm looking for a train to stevenage, leaving on Sunday. Sentence6: Do you have entrance fees for any of the others? Sentence7: No, I need to leave some time after 14:30, and I'll be traveling to Cambridge. Sentence8: Thank you for contacting Cambridge TownInfo centre. I hope you have a pleasant trip! Goodbye! Sentence9: No thank you that is all the information I need today. Sentence10: Before we do that are there any attractions that feature a swimming pool in town? Sentence11: There are many trains at that time, where are you leaving from? Sentence12: What is the name, entrance fee, and phone number of the one in the center? Sentence13: the 1st train out of cambridge going to stevenage is at 15:21 arriving at 16:10. shall I get a ticket for you? Sentence14: The name is Parkside Pools. The entrance fee is not listed in our database, but you could probably get it by calling them at 01223446100. Question: Who has spoken the sentence 8? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: No problem. Have a great day. Sentence2: No that will be all, thank you. Sentence3: I need a contact number please. Sentence4: I need a taxi from bedouin that will leave after 20:00 Sentence5: Can I help you with anything else? Sentence6: Thank you very much. Sentence7: The contact number is: 07720856341. Sentence8: I have booked a black tesla for you Sentence9: stansted airport train station is the drop off location Sentence10: I'd be happy to help - what is your destination? Question: Who has spoken the sentence 2? (A) User (B) System
[EX A]:
Answer: (A) User