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

[EX Q]: Sentence1: Thanh binh is a nice restaurant that serves Vietnamese food and is in the cheap price range. Sentence2: That sounds great! May I have their phone number please? Sentence3: Thank you for using the Cambridge restaurant system, please call again. Sentence4: Okay, thank you for your help! Sentence5: How about vietnamese food, please? Sentence6: I am looking for a restaurant that serves Malaysian food and is in the cheap price range. Sentence7: thanh binh's phone number is 01223 362456 Sentence8: No matches found for cheap Malaysian food. Would you like something else? Question: Who has spoken the sentence 1? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: They are quite expensive . Sentence2: I want a restaurant in the south part of town and serves panasian food. Sentence3: Sorry what type of food do they serve? Sentence4: Thank you, goodbye! Sentence5: Sorry, there are no restaurants in the south part of town serving panasian food. Sentence6: They serve italian food. Sentence7: Frankie and Bennys serves Italian food in the south part of town. The phone number is 01223 412430, and the postcode is C.B 1, 7 D.Y. Sentence8: Thank you for your help. Good bye. Sentence9: italian food please. phone number and postcode please. Sentence10: what is the price range ? Question: Who has spoken the sentence 1? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: I'm also looking for a place to stay. Sentence2: The Cambridge Contemporary Art museum is a fantastic place to visit. It's located at 6 Trinity Street and admission is free! Do you need more information? Sentence3: There is architecture, boats, colleges, museums, and many other things. Sentence4: That will be all for today. Thanks. Goodbye. Sentence5: Okay, if the lack of parking isn't a dealbreaker, you might enjoy cityroomz. Their number is 01223304050. Shall I book a room for you? Sentence6: Recommend something that's in the center of town for me. Sentence7: What area would you like to stay in? Sentence8: I have booked your taxi. Be expecting a red Honda. Their phone number is 07543221637. Sentence9: Free parking would be nice but it is not a necessity. Sentence10: I want to stay in the center of town in a 0 star hotel that is moderately priced and has free parking. Sentence11: Yes please. I'll need to for 8 people for 4 nights starting Wednesday Sentence12: There's not an exact match to fit your needs. There's a hotel without free parking available. Or, if you need the free parking, would a cheap guesthouse work instead? Sentence13: Yes, I also need a taxi from the hotel at 16:30. Sentence14: Done! Your reference number is 07Z05P6U . Do you need anything else? Sentence15: Thank you for using our system today! Sentence16: I am looking for places to visit in downtown Cambridge. What are some popular attractions? Question: Who has spoken the sentence 5? (A) User (B) System
[EX A]:
Answer: (B) System