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

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
Answer: (B) System

Sentence1: It doesn't matter, I just need to get there. Sentence2: I am sorry but that time is not available. Would you like to try another time or day perhaps? Sentence3: There is a restaurant called restaurant alimentum that meets your criteria. Sentence4: It's all booked, you're looking for a black volkswagen and their contact number is 07263669645. Sentence5: As a matter of fact, it appears all of the gastropubs in Cambridge have closed. Is there anything else that interests you? Sentence6: Have a great day! Sentence7: Booking was successful. The table will be reserved for 15 minutes. Reference number is : 8HB62Z6W . Is there anything else I can help you with? Sentence8: Sure. What time would you like to leave the restaurant? Sentence9: I am looking for a gastropub in the south. Sentence10: The address is cambridge leisure park, clifton way. Can I do anything else for you? Sentence11: Yes, I'd like to see some entertainment near the restaurant. Could you recommend me something good? Sentence12: Are there any Gastropubs in town? Sentence13: Yes, it is. Nusha is in the South as well. Sentence14: Yes, I would like to book a taxi from the restaurant to the entertainment. Sentence15: How about Tenpin in the south? Sentence16: Great, thank you so much for your help! That's everything I'll need today! Sentence17: Thank you for contacting Cambridge TownInfo centre. Goodbye! Sentence18: That will do. Please get me their address. Sentence19: How about a modern European cuisine in the south area? Sentence20: Let's book that for 12:45 on Tuesday. It will be for 7 people. Sentence21: I'm sorry I couldn't find any Gastropubs in the South. Is there another type or area which you would like to try? Sentence22: Splendid! Thank you for all your help. That's all I need. Goodbye. Sentence23: Could you try 11:45 please? Sentence24: Is it located near Alimentum? I'm looking for something in the same area as the restaurant. Question: Who has spoken the sentence 4? (A) User (B) System
Answer: (A) User

Sentence1: What about a Mexican food restaurant also in the south part of town? Sentence2: Booking was successful. The table will be reserved for 15 minutes. Reference number is : 2RJ7AU7V . Is there anything else I can help you with? Sentence3: I'm sorry, I'm not finding a restaurant in the south that serves New Zealand food. Sentence4: I will try the Lovell lodge. Will you book a room for me starting on Monday for 3 nights, please? I am traveling alone. Sentence5: That will be all then, thank you. Sentence6: Thank you and enjoy your stay in Cambridge! Sentence7: Yes, there is Chiquito Restaurant Bar, which is an expensive Mexican place in the area. How does that sound? Sentence8: That sounds good. Please book a table for 1 people at 13:15 on Monday. Sentence9: I also need to book a hotel. It needs to have 2 star and be of a moderate range with free parking. Sentence10: I have two such entries. Both are hotels in the north. There is the ashley hotel and lovell lodge. Do you have a preference? Sentence11: I need to find a restaurant in the south to dine at that serves New Zealand food. Can you help? Sentence12: There is a known system glitch within dialogue systems where some things cannot be booked, the hotel can be reached at 01223425478, I apologize any other questions today? Question: Who has spoken the sentence 2? (A) User (B) System

Answer: (A) User