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 cannot find any restaurants serving halal food. Do you have any other preferences? Sentence2: How about indian food? Sentence3: Their address is 71 Castle Street City Centre, their phone number is 01223 366668. Sentence4: Is Cocum located in the east part of town? Sentence5: No, the Cocum is located on the West part of town. Would you like me to find an Indian restaurant on the east part of town? Sentence6: I have 4 Indian restaurants showing for the east part of town. They are Curry Prince, Pipasha Resteraunt, Rajmahal, and Sitar Tandoori. Sentence7: Correct Sentence8: Hello, I am looking for a restaurant that serves halal food. Sentence9: The Cocum serves Indian food. Sentence10: What is their address and phone number? Question: Who has spoken the sentence 1? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Yes, both the Hobsons House and the college are both in the west part of town. Would you like information for the college? Sentence2: Booking completed! Your ca is a black lexus and the contact number is 07301130189 Sentence3: It doesn't matter. Sentence4: Queens college is quite pretty. It is on Silver street in the west. Sentence5: Perfect! That's all I need today, thank you! Sentence6: No, I need something in the western part of town. Sentence7: There are lots of churches in the centre of town. Would you like to visit one? Sentence8: What would you recommend? I don't have a preference. Sentence9: There are many colleges and museums on the west side. There is also one entertainment center. Which do you prefer? Sentence10: Do you know when you want to get there by? Sentence11: You are very welcome. Glad I could help. Have a nice day. Sentence12: Is it near the Hobsons House hotel? Sentence13: Actually, the college sounds great. I don't need more info. But I would love a taxi to get me from Queens College to Hobsons House. I want to leave by 16:30. Sentence14: Hello. I'm looking for a few good places to see in town on my next visit to cambridge. Question: Who has spoken the sentence 6? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: Graffiti is in the west area. Would you like me to see what is available in the east area? Sentence2: yes, I would prefer it to be in the west area. Sentence3: Okay. There is one option here for you. It is grafton hotel restaurant. Do you need a reservation? Sentence4: I need more information, such as when you would like to book it and for how many people? Sentence5: I would also like to get some expensive fusion food. Sentence6: What area would you like that in? Sentence7: Graffiti serves British food in the west area, are you ready to make a reservation? Sentence8: I am looking for a place to stay with free wifi. Sentence9: I need a restaurant in the east area, so that won't work. Sentence10: Yes please. Go ahead and book it for me. Thank you and good bye Sentence11: In the east side of town. Sentence12: How about a British restaurant instead? Sentence13: How about travellers rest restaurant located in the west side of town? Sentence14: We have 7 options that meet your criteria. Do you have a specific price range in mind or would you like a recommendation? Sentence15: The address is 138 perne road Sentence16: Not really, but can you give me the address for your favorite place? Sentence17: Is Graffiti in the same area as my hotel? I'd like to keep it to that area if possible. Sentence18: I prefer the Carolina Bed and Breakfast. It's a 4 star guesthouse in the moderate price range. Would you like for me to book a room for you? Sentence19: I'm sorry, I was confused. I need a british restaurant in the east side. Sounds like Graffiti won't work for me. Sentence20: There is nothing that meets that criteria, shall I run another search? Sentence21: Possibly, but first can you give me the exact address for Graffiti? Sentence22: Could you just give me the address for now? Sentence23: There are 6 to choose from. Do you have a preference for area? If not, then I recommend graffiti. Sentence24: Sure they are located at Hotel Felix Whitehouse Lane Huntington Road, is there anything else I can help you with? Question: Who has spoken the sentence 15? (A) User (B) System
[EX A]:
Answer: (B) System