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

[EX Q]: Sentence1: Hi. Can you please help me find a restaurant that serves food from singapore ? I'd like it to be on the East side of town if possible. Sentence2: Thank you for using the Cambridge restaurant system. Goodbye. Sentence3: Yu Garden is located on the east part of town. Would you like the telephone and address? Sentence4: What is the address, phone number, and postcode? Sentence5: Can you help me find some Chinese food then? Sentence6: There are no restaurants serving Singaporean food on the east part of town. Sentence7: Thank you, goodbye. Sentence8: Yu Garden is located at 529 Newmarket Road Fen Ditton, C.B 5, 8 P.A, and the number is 01223 248882. Question: Who has spoken the sentence 3? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Great I was able to book A and B guest house, the reference is VMWIVZV7 . Sentence2: I would like to book a table at the Italian restaurant for 8 people on Thursday at 14:45. Can I have the reference number for that as well? Sentence3: I'm looking for a place to stay in the moderate price range. It doesn't need to have free parking. Sentence4: Okay you're all set. Your reference number is U37O50HC . Is there anything else? Sentence5: Not a problem, have a great day! Sentence6: I was able to book a blue honda, phone number is 07521143616 Sentence7: It should be on the east side, and have free wifi, no food preferences though. Sentence8: I have 3 results for moderately priced guesthouses on the east side. All have 4 star ratings and free wifi, do you need parking? Sentence9: Yes, I would like to book a taxi from the hotel to the restaurant. Sentence10: Great thank you for all your help Sentence11: Thank you for your help in booking the hotel for me! Sentence12: I do not need free parking. Can you book one of them for Thursday? I have 8 people and we need to stay for 2 nights. Sentence13: I also also need a place to eat in the moderate price range in the same area as the hotel Sentence14: There are quite a number of hotels that fit your description. Any preferences in location or food served? Sentence15: You are welcome. Goodbye! Sentence16: Sure I have two Indian restaurants and one Italian restaurant pizza hut fen ditton matching your price and area preference. Do any sound good to you? Question: Who has spoken the sentence 4? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: That sounds good. What is the phone number there? Sentence2: Could you help me find a museum to visit? Sentence3: The number there is 01223307402. Anything else? Sentence4: Awesome, thanks. No, that's all I need. Sentence5: Sure. I really enjoy Castle Galleries. It's conveniently located in the town centre and has free admission. Sentence6: I don't have a preference. Can you recommend me one? Sentence7: You're welcome. Enjoy your visit to Castle Galleries! Sentence8: We have 23 museums in Cambridge. Do you have a particular part of the city you'd like to go? Question: Who has spoken the sentence 1? (A) User (B) System
[EX A]:
Answer: (B) System