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

Sentence1: How about the Ashley Hotel? It is on the north side of town, has 2 stars, free wifi and parking, and is moderately priced. Sentence2: Is that a 2 star hotel? Sentence3: Are there any available for less than $200 a night? Sentence4: Unfortunately, the rooms are unavailable for that day and time. Can I try a shorter stay for you or possibly a different day? Sentence5: Of course! The reference number is QZYSOMAW and the address is 74 chesterton road. May I help with anything else? Sentence6: No, it has 4 stars Sentence7: Can you make a reservation for 6 people for 3 nights starting on Wednesday. Sentence8: Yes, I was able to successfully book you for two nights. Is there anything else you need? Sentence9: The only 2 star hotels are in the north or the east. Do you mind staying in one of those areas? Sentence10: Nope, that's all I need. Thanks for your help! Sentence11: Can I have the reference number and address please? Sentence12: How about for 2 nights? Sentence13: We're glad to be of service, and please do not hesitate to contact us if you need more help while you're in Cambridge! Sentence14: Yes that would be fine with me Sentence15: There are several. Alexander Bed and Breakfast is cheap and is in the Centre. Would you like me to book that? Sentence16: Let's try a hotel type with free parking in the centre of town with a star of 2. Sentence17: Are there any rooms available in hotels with free parking? Sentence18: how about for 2 nights? Sentence19: Yes. Do you have a preference for the hotel's area or price range? Sentence20: I'm sorry. I have no 2 star hotels in the center of town. However, I have some in other parts of town. Would you care to modify your search criteria? Question: Who has spoken the sentence 10? (A) User (B) System
Answer: (A) User

Sentence1: I'm sorry, I only know that it is moderately priced. Can I book a room for you? Sentence2: What is the price range? Sentence3: Is there a particular area of the city where you'd like to stay? Sentence4: No that's all. Thanks! Sentence5: Yes. There are a number of hotels with wifi. Archway House is one of them that I can recommend. Sentence6: You have a nice day. Good bye. Sentence7: Howdy! I'm in town for the night and need a place to stay. I'd like a four star joint with free parking, if you please. Sentence8: no that's fine. Sentence9: Nice! I hope you enjoy this beautiful city, I found 5 hotels for you. What is your price range? Sentence10: Is there anything else you will need today? Sentence11: Archway house is in the moderate price range. They are located at: 52 gilbert road. Anythign else you need? Sentence12: I have 16 guesthouses that are 4 star and have parking, do you have any other requirements to help narrow the search? Sentence13: I don't have a price range. As long as it's nice. Sentence14: Sure, what is its address and price range? Sentence15: Do any of those have free wifi? Sentence16: No, I don't care about the area, either. But do you have a guesthouse? Question: Who has spoken the sentence 1? (A) User (B) System
Answer: (B) System

Sentence1: I don't care but I need the area, entrance fee, and postcode of entertainment available in town. Sentence2: Yes, I have found 4. Ugly duckling, tang chinese, hk fusion and sesame restaurant and bar. Would you like any of these? Sentence3: I'm sorry, there are no Swiss restaurants in the area. Do you have another kind in mind that I could assist with? Sentence4: Which is your favorite? Can you get me the address, postcode, and phone number? I'll give them a call myself. Sentence5: I'm sorry I did not want British food. Are there any chinese restaurants instead located in the centre area? Sentence6: I'd recommend All Saints Church in the centre. Their postcode is cb58bs and they have free entrance. Anything else I can help you with? Sentence7: i would recommend the sesame restaurant and bar the address is 17 Hills Road City Centre, cb21nw. phone number is 01223358899. is there anything else i can assist with? Sentence8: Yes, I am looking for a place to dine. Can you recommend a restaurant in the expensive price range that serves Swiss food? Sentence9: There are many things to do in Cambridge; clubs, museums, churches, boating etc. What would you like to do? Sentence10: How about British food? Sentence11: No that is all. Thank you. Sentence12: I have several restaurants which serve British food in different areas of the town. Is there an area you prefer? Sentence13: Can you help me find some entertainment in Cambridge? Sentence14: You're welcome. Have a great day! Question: Who has spoken the sentence 3? (A) User (B) System

Answer: (B) System