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 would prefer the north please. Sentence2: I have found 13 of them. Can you please be more specific about what you would like? Sentence3: I'd like to find a college to visit in the center of town. Sentence4: No thank you that will be all Sentence5: I would suggest the acorn guest house it is a great place to stay. Sentence6: That will be fine. I'll need to book for Saturday, 3 nights, and 1 person. Sentence7: You're all set! Your reference number is 41BK9PC7 . Sentence8: moderate price range thank you Sentence9: There are 32 hotels that offer free internet, is there a price range or area you prefer? Sentence10: Actually one more thin, I need a taxi from the hotel to the restaurant, I want to leave at 09:45. Sentence11: Thank you! Can you also help me find a place to stay with free wifi? Sentence12: I narrowed it down to 17. What part of town would you prefer and do you want free parking? Sentence13: No that will be it for today. Sentence14: I recommend Emmanuel college. Their address is saint andrew's street Sentence15: Okay, I booked a yellow honda and their contact number is 07225232221. Do you need help with anything else? Sentence16: You can choose one for me and give me the address. Question: Who has spoken the sentence 7? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Are there any that serve north american food? Sentence2: yes. please book for me a table for thee tommorow diner at 8 pm Sentence3: There phone number is 01223312598. Is there anything else I can assist you with? Sentence4: Yes, there is gourmet burger kitchen. It is an expensive restaurant. Would you like me to book it for you? Sentence5: Yes, the University Arms Hotel is located in the centre area and is on Regent Street. Would you like me to book a room for you? Sentence6: Okay can you also help me with a restaurant that serves Cantonese food in the city center? Sentence7: I just need their phone number. Sentence8: I need information on the university arms hotel. Sentence9: No I am good for now, thanks for all of your help. Sentence10: I need more info. Does the hotel have free parking and what is the price range? Sentence11: There aren't any restaurants in the city centre that serves Cantonese food. Would you like to try a different type of cuisine or try a different area? Sentence12: Thank you for contacting us and have a nice day. Sentence13: You asked about a hotel. Would you like to book a room or would you like me to help find a restaurant? Sentence14: It is in the expensive price range, but it does have free internet and free parking. Question: Who has spoken the sentence 9? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: I need the train to arrive by 10:45 and should be on the same day as the restaurant booking. Sentence2: Thank you so much! Goodbye. Sentence3: The TR1180 will have you in Cambridge about 10:35. Sentence4: How about Chinese food? Still expensive, still in the center. Sentence5: I'm also needing a train that departs from Norwich and goes to Cambridge. Sentence6: Success! You've got a table for 2 reserved on Wednesday at 13:45. Reference number I51P6C79 . Can I help with anything else today? Sentence7: No I really wanted an expensive place in Centre that serves New Zealand cuisine. Sentence8: Could you try one of those different places? I really need that day and time. Sentence9: Yes, I have four that I can recommend. How about Ugly Duckling? Sentence10: Enjoy your stay in cambridge and have a great day. Sentence11: How about on Wednesday, the same time for 2? Sentence12: There are none in the centre. There is no New Zealand food at all. Sentence13: Sure, when would you like to travel? Sentence14: Hi, I'm looking for a restaurant that serves expensive new zealand food and is in the center area. Sentence15: I am sorry to say that all 4 of the restaurants do not have openings at that time. Would you like to see other price ranges or areas? Sentence16: There are no openings at that time, is there another time you would like me to try? Sentence17: I would like a table for 2 at 13:45 Monday. Sentence18: Sorry, there are no restaurants like that in the centre. Would you like to change the type of food? Question: Who has spoken the sentence 2? (A) User (B) System
[EX A]:
Answer: (A) User