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

[EX Q]: Sentence1: Great! I have booked you a taxi, which will pick you up from the hotel. It will be a yellow Tesla and the contact number is 07140486418. Anything else today? Sentence2: no thank you that is all Sentence3: Could you also book it for me? 3 people, 14:30 on Sunday. Sentence4: Where would you like the taxi to pick you up? Sentence5: Are you sure that you don't want to get to the restaurant for your booked time? Sentence6: I am looking for a place to dine in the centre of town Sentence7: It doesn't matter. We want to eat indian food. Sentence8: Yes,that is it for today. Thanks again. Sentence9: You're welcome, let me know if I can assist with anything else. Sentence10: We have several options. What price range would suit your needs? Sentence11: Sorry, I do need to find a guesthouse as well. Something moderately priced, perhaps 3 stars? Sentence12: May I also have the telephone number for the alpha-milton, please? Sentence13: it should pick me at the restaurant at the booked time Sentence14: the alpha-milton is located in the north. their address is 63 milton road and the postcode is cb41xa. Sentence15: The alpha-milton guest house will fit your needs. Would you like me to be book a room there? Sentence16: Sure, the number for Alpha-Milton Guest House is 01223311625. Can I help with anything else? Sentence17: I have your table booked for Sunday afternoon. They will hold the table for 15 minutes. Your reference number is 28O595TK . Can I help you with anything else? Sentence18: Yes, the address is 106 Regent Street in the City Centre. Their phone number is 01223302330. Can I help with something else? Sentence19: I do need the taxi to get to Curry Garden by the booked time of 14:30. I'm a little scatter brained today. Thank you for clarifying. Sentence20: The prompt before this call came through said that you needed two things, do you need anything regarding a hotel, transport or attractions? Sentence21: Thank you for using our services. Have we met all of your needs today? Sentence22: i also want a taxi to help commute between the two places Sentence23: Well I have the Curry Garden in the expensive price range. Sentence24: No thank you, I just need the address, phone number and area. Sentence25: Please provide me with the address and telephone number. Sentence26: nope, that's all thanks so much! Question: Who has spoken the sentence 16? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: it is located at Thompsons Lane Fen Ditton and you can reach them at 01223 362525 . Sentence2: La mimosa serves mediterranean food in the centre of town. Would you like their information? Sentence3: You're welcome, goodbye Sentence4: Yes, I'd like the address and phone number please. Sentence5: looking for mediterranean food Sentence6: Thank you! Goodbye. Question: Who has spoken the sentence 4? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: Would you like to book a table? Sentence2: Hi, I'd like to book a train to stansted airport from cambridge. Can you help? Sentence3: On Saturday. Is there a train that will arrive by 15:15? Sentence4: Absolutely. Where will you departing from? Sentence5: You're welcome. Please let me know if you need anything else. Sentence6: Sure - The Lucky Star serves Chinese food and Nandos serves Portuguese food. Do either of those sound good? Sentence7: Can you also tell me the postcode? Sentence8: Sure. The post code is cb17dy. Sentence9: There is! TR7213 leaves at 05:40 and arrive at 06:08 it is 10.10 pounds. Can I book that for you? Sentence10: Thanks for your help. Good bye. Sentence11: No need to book it. Thanks. But can you help me find a cheap restaurant in the south? Sentence12: The Lucky Star sounds good. That's all I need. Sentence13: What day would you like to leave? Sentence14: From Cambridge, which is why I asked the Cambridge TownInfo centre. Question: Who has spoken the sentence 8? (A) User (B) System
[EX A]:
Answer: (A) User