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

Ex Input:
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 Output:
Answer: (B) System

Ex Input:
Sentence1: The El Shaddai Hotel is located at 41 warkworth street, would yo+u like the phone number? Sentence2: Thank you, goodbye. Sentence3: Can I book a stay there for 1 person for 5 nights starting tuesday please? Sentence4: Nope, that'll do it. Thanks for your help! Sentence5: Your booking was successful, reference number is 8T4AJ6P9, 1 person for 5 nights starting Tuesday at the El Shaddai. Can I help you with anything else? Sentence6: Hello, I would like to find the el shaddai hotel. Can you help me? Question: Who has spoken the sentence 3? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: Thank you for using our system! Sentence2: I'll be leaving from Cambridge. Sentence3: Were you able to book it for 4 people? Sentence4: Okay no that is all today. Sentence5: Booking was successful, the total fee is 8.08 GBP payable at the station. Reference number is : V6E0H0GJ . Is there anything else I can help with? Sentence6: Certainly. Where are you departing from? Sentence7: The arrival time does not matter, but it should leave on Sunday after 15:15. Sentence8: I was able to book 4 tickets. The total fee will be 32.32 pounds, payable at the station. The reference number is BPUJ9ISP . Can I help you with anything else? Sentence9: I have several trains, when would you like to arrive by? Sentence10: I am looking to leave for bishops stortford after 15:15 by train. Question: Who has spoken the sentence 6? (A) User (B) System

Ex Output:
Answer: (A) User