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

[EX 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
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Yes, can I get a table for 4 on saturday at 15:15? Sentence2: Hi! Can you help me find a particular restaurant? Sentence3: unfortunately they are filled up for that time would you like me to reserve another time or would you like to choose another restaurant. Sentence4: Of course, there are 110 restaurants in town. Would you like me to search by restaurant name? Sentence5: The Varsity Restaurant serves international food in the center of town. Do you want me to book it for you? Sentence6: Excellent. I'll need the reference number. Sentence7: Yes, I am looking for the Varsity Restaurant. Sentence8: Yes, I will book a table for 4 on Saturday at 15:15. Question: Who has spoken the sentence 2? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: I hope you enjoy the rest of your day too! Sentence2: No. I also need a train. Sentence3: We've got about 5 to choose from. All of them are cheaper. Did you have a preference on the area? Sentence4: That one is perfect. Thanks for your help. Good bye Sentence5: The La Margherita meets your criteria. Would you like to book a table? Sentence6: I looking for an Italian restaurant that offers cheap food. Sentence7: Yes. Please book a table for 2 at 16:45 on friday and please give me the reference number. Sentence8: We have many trains I can book for you. Where are you departing from and going to? Sentence9: Booking was successful. The table will be reserved for 15 minutes. Your reference number is OWGTR8M7 . Will that be all? Sentence10: Departing Peterborough on Friday. Heading to Cambridge. I need to arrive by 09:45. Do you have anything? Sentence11: I would prefer one on the west area. Sentence12: TR1662 departs at 05:19 and arrives at 06:09. Will that work for you or would you like to try a later train? Question: Who has spoken the sentence 10? (A) User (B) System
[EX A]:
Answer: (A) User