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

[Q]: Sentence1: We have nine expensive dining establishments on the west side. Cuisines offered are Thai, Indian, European, and British. Do you have a preference? Sentence2: Thank you. Can you please give me the reference number? Sentence3: The reference number is 5WHDPGHW .. Is there anything else I can assist you with? Sentence4: Okay I booked a table for 4 at 15:00 on Saturday at the Graffiti, an expensive British restaurant in the west area of town. Sentence5: I am interested at eating at an expensive place in the west part of town. Sentence6: No that will be all. Thank you so much for all of your help! Sentence7: Excellent. Have a good rest of your day! Sentence8: No I don't have a preference. I want to book for four people at 15:00 on Saturday. Question: Who has spoken the sentence 5? (A) User (B) System
[A]: Answer: (B) System


[Q]: Sentence1: I don't have a preference. Can you recommend one? Sentence2: Thank you that's all the help I need. Goodbye Sentence3: I can work on booking this for you. Sentence4: Sounds great, thanks. I am also looking for a restaurant in the Centre that serves gastropub food. Sentence5: I'm looking to visit a museum in Cambridge. Can you tell me a little about what you have? Sentence6: I would also like to book a taxi to get between the museum and the restaurant. Sentence7: I will make a booking for backstreet bistro,Booking complete here is your reference number T9TB8FBO . Sentence8: I need to arrive at the restaurant by 14:45. I'll need the contact number and car type as well please. Sentence9: Sure. Is there anything else I can assist you with today? Sentence10: It really doesn't matter money is no object. I need a table for 8 on thursday at 14:45. As long as its a gastropub in the centre of town Sentence11: Okay I have booked your taxi. The contact number is 07498867892 and the car is a blue tesla. Sentence12: Cambridge Artworks is a great place and has free entry. Their address and phone number is 5 Greens Road 01223902168. Sentence13: awesome! thanks for all the info Sentence14: There are 23 museums that match that criteria. What area should the museum be in? Sentence15: Okay, there are 3 different restaurants. What is your price range? Sentence16: Thanks for using our service today! Question: Who has spoken the sentence 7? (A) User (B) System
[A]: Answer: (B) System


[Q]: Sentence1: You're welcome. Do you need any further assistance? Sentence2: No thank you that will be all for today! Sentence3: You're very welcome. Feel free to call us again in the future. Have a nice evening. Sentence4: The address is 36 Saint Andrews Street , cb23ar, and the phone number is 01223462354. Sentence5: There are 33 expensive restaurants in the centre of the city. What type of cuisine are you seeking? Sentence6: Thank you for your help. I appreciate it! Sentence7: Yes please as well as their postcode. Sentence8: Yes I found a perfect fit for you. Wagamama is a Japanese restaurant that serves expensive food in the center of town. Would you like their address and telephone number? Sentence9: I am looking for a nice restaurant in the center of town. Sentence10: Do you have a price ranger preference? Sentence11: I'd like Japanese food, please. Sentence12: he restaurant should be in the expensive price range. Question: Who has spoken the sentence 3? (A) User (B) System
[A]:
Answer: (B) System