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

Q: Sentence1: The address is 41 Warkworth Street. Can I help you with anything else today? Sentence2: Yes, I'm looking for a guesthouse with a star rating of 1. It should be in the city centre please. Sentence3: Enjoy your trip. Sentence4: Hi! I'm looking for someplace to go in the centre. Sentence5: No that was all I needed. Thank you, goodbye. Sentence6: I don't have any guesthouses that meet that criteria. Would you like me to try something else? Sentence7: Do you have any guesthouses with a star rating of zero? Sentence8: You are booked for a yellow audi. Your contact number is 07526986404. May I help you with anything else? Sentence9: What is your departure site? Sentence10: No not right now. What is their address? Sentence11: I'm sorry, we need a taxi departing from Saint Mary's Church by 3:15 going to the guesthouse. Sentence12: Yes, I do have one. The El Shaddai is in the centre and is cheap. It is 0 star rated and offers free parking and wifi. Do you need a room? Sentence13: It does not really matter can you suggest one? Sentence14: how about little saint mary's church? Sentence15: Okay, there's plenty to do in the city's centre. What kind of attraction are you interested in? Sentence16: I also need a taxi to get to little saint mary's church by 3:15. Sentence17: It is an architecture attraction it's located on little saint mary's lane postcode cb21qy. Is there anything else I can help you with? Sentence18: Sounds perfect. Is it architectural? Also, can I have the address with postcode? Question: Who has spoken the sentence 16? (A) User (B) System

A: Answer: (A) User
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Q: Sentence1: You're welcome. Can I help you with anything else? Sentence2: That is all. Thanks Sentence3: The post code is CB11JG. Sentence4: Thank you, what's the post code? Sentence5: Thank you for your help Sentence6: Cambridge, parkside police telephone number 01223358966. Sentence7: I need to get to the nearest police station, can you assist me? Sentence8: Okay. Have a good day and thanks for using our system. Question: Who has spoken the sentence 4? (A) User (B) System

A: Answer: (A) User
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Q: Sentence1: What day would you like to start your reservation? Sentence2: Could you see if there is a restaurant that serves British food in the same area as the hotel? Sentence3: You are welcome. Sentence4: Three people please, on Monday at 18:30. Sentence5: Booked you a table at the oak bistro. Your reference number is SSUTW528 . Sentence6: I'm looking for hotels in the center. Sentence7: Yes, please book a room for 3 people and 5 nights. Sentence8: The University Arms hotel fits all of your criteria, would you like me to book a room? Sentence9: I would like for the hotel to have a 4 star rating and include free wifi. Sentence10: I don't have a preference. Sentence11: The Alexdander Bed and Breakfast is a good recommendation. It has four stars and affordable pricing. The Gonville Hotal is also a good choice. Would you like the address to either? Sentence12: Please start the reservation on Monday. What is the reference number? I also need a restaurant that serves australasian food at a moderate price in the same area as the hotel Sentence13: I am sorry but there are no restaurants in that area which meet your criteria. Would you like me to search for another type of cuisine? Sentence14: Certainly, we have either restaurant one seven, the oak bistro, the copper kettle, cotto. Can I book a table at one, if so how many will be dining? Sentence15: Thank you very much for your help. Sentence16: There are two, one in the expensive price range, one in the cheap price range. Which do you prefer? Question: Who has spoken the sentence 9? (A) User (B) System

A:
Answer: (B) System
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