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

[Q]: Sentence1: The postcode is CB58BS. Can I help you find anything else? Sentence2: Can you tell me what their star rating is? Sentence3: I need something in the south and free parking. Sentence4: I will be in the centre of cambridge. I am looking for any type of attraction involving architecture. Sentence5: You're very welcome, I'm glad that I could help. I hope that you enjoy your stay! Goodbye. Sentence6: Of course! They are a 3-star establishment. Would you like me to go ahead and book that for you? Sentence7: thats it, thanks! Sentence8: Bridge Guest House was available for 2 nights. Your reference number is ULWMFZAX . What else can I do for you today? Sentence9: I'm sorry. There is no availability. Would you like to try different dates or another hotel? Sentence10: I'd recommend All Saints Church on Jesus Lane. Did you need help with anything else? Sentence11: I would recommend the Bridge Guest House based on your criteria. Would you like me to book you a room? Sentence12: There are 33 places to stay, do you have any requirements? Sentence13: How about just 2 nights instead? Sentence14: yes, 7 people 4 nights starting Wednesday. Sentence15: I need a place to stay. Sentence16: Can you give me the postcode for that? Question: Who has spoken the sentence 4? (A) User (B) System
[A]: Answer: (A) User


[Q]: Sentence1: I'm sorry, but we just reserved your table. There is no car type. But since you ask, did you need a taxi? Sentence2: Thanks, that's all I need today. Goodbye! Sentence3: Could i please get the phone number and address? Sentence4: good day and thanks for using our services Sentence5: I only have one restaurant in the north for European food, but they have amazing food. It's called City Stop Restaurant. They are expensive but so worth it! Sentence6: book a table for 2 people at 13:15 on tuesday. Sentence7: I would like the north please. Sentence8: I am thinking I would like to try some european food while I am in town. Sentence9: Yes I need a taxi that will take me between the two places and need to arrive by 13:15. Sentence10: Okay. I have a taxi booked. It will be a yellow bmw and the contact number is 07135918917 Sentence11: The Botanical Gardens at Cambridge University are a favorite destination. The entrance fee is only 4 pounds. Sentence12: What is the car type, please thank you Sentence13: There are several to choose from, in which part of town would you like to concentrate? Sentence14: Sure, the phone number is 01223336265. The address is bateman street. Can I do anything else for you? Sentence15: Yes, I would like the information on parks that are located in the centre please. Sentence16: Your booking was successful! The table will be reserved for 15 minutes. Reference number is : ZLRYLH3O . Question: Who has spoken the sentence 13? (A) User (B) System
[A]: Answer: (B) System


[Q]: Sentence1: I need a hotel named University Arms, I need the star of this hotel and the postcode please. Sentence2: You're Welcome! Have a great day! Sentence3: No thanks, but I am looking for an expensive restaurant in the center of town. Can you tell me what's available? Sentence4: I have 4 different restaurants to choose from. If I might offer a recommendation, the Ugly Duckling is highly rated and has an excellent buffet option. Sentence5: Ok can we narrow our search a little. Where are you staying and what can you afford? Sentence6: would i book a table for 1 people at 13:30 on saturday please? Sentence7: How about a little earlier, say 12:30? Sentence8: I'm sorry, they don't have anything available then. Would you like me to try another day or time? Sentence9: There are 33 restaurants that match your preferences. What type of food would you like? Sentence10: Thank you very much. Goodbye. Sentence11: Booking was successful. The tabled will be reserved for 15 minutes. The reference number is: ZIEEXAYS Sentence12: I am looking for a hotel. Sentence13: The University Arms Hotel is a 4 star hotel in the centre of town, and their postcode is cb21ad. Would you like to make a reservation? Sentence14: I would really like chinese food please Question: Who has spoken the sentence 12? (A) User (B) System
[A]:
Answer: (A) User