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

Input: Consider Input: Sentence1: I just need to find a train that leaves at 19:30 for 5 people Sentence2: Is there another day you would like me to check? Sentence3: Hi, I'm looking for any information that you have on the Lensfield hotel in Cambridge. Sentence4: Nope that should be it thanks. Sentence5: I only have trains that leave at 20:24 and later on a Friday from Stansted airport. Will this time and day work for you? Sentence6: Alright, I booked 5 tickets for Saturday train your reference number is 1R61PO9r . You can pay for your tickets at the station. Is there anything else? Sentence7: Unfortunately, no trains leave at that time Sentence8: Unfortunately there are no trains that leave at this time. Sentence9: I'm staying for 2 days and it's just myself. What train can I take to depart from the stansted airport that leaves at 19:30? Sentence10: What are the other 4 times of departure for Saturday. I'll need bookings for 5 people and a reference number. Sentence11: Glad to be of service. Have a wonderful day! Sentence12: The Lensfield Hotel is an expensive, 3-star hotel in the south of town, with internet and parking. Would you like me to book it for you? Sentence13: Sure, the phone number is 01223355017. How many days will you be staying, what day do you need to arrive, and how many people will be staying? Sentence14: There are only 4 trains that leave on Saturday Sentence15: I'm actually looking for something on Saturday. Are there any trains on Saturday that leave at 19:30? Sentence16: Yes, please. Can you also give me the phone number? Question: Who has spoken the sentence 1? (A) User (B) System

Output: Answer: (B) System

Input: Consider Input: Sentence1: Can you check the availability at the University Arms Hotel for five people? Sentence2: You are welcome. Sentence3: Sure thing! Your reference number is LW8PBD97 . Sentence4: Thursday please. Sentence5: Thank you so much, that is all that I need for now. Have a wonderful day. Sentence6: What day would you like to book? Sentence7: Actually for 5 nights and there will be 5 of us staying Sentence8: For just one day? Question: Who has spoken the sentence 3? (A) User (B) System

Output: Answer: (B) System

Input: Consider Input: Sentence1: That's all I need. Thank you! Sentence2: Yes, please. Table for 8 at 15:00 on wednesday. Sentence3: I can't wait to get to Cambridge and try some of the restaurants I've heard about. Can you tell me about one of them? I think the name is Little Seoul. Sentence4: Thank you for contacting Cambridge TownInfo centre. I hope you have a nice trip! Goodbye! Sentence5: I have a train leaving cambridge at 11:36 and arriving in norwich by 12:55. Would you like me to book that for you today? Sentence6: I'd like to arrive in Norwich by 13:15 if possible. Sentence7: Can we do the same day at 14:00 instead? Sentence8: I'm so sorry, but Little Seoul was unable to accommodate that reservation. Would you like to try a different day or time? Sentence9: Little Seoul is a Korean restaurant in the city centre which is in the expensive price range. Would you like me to book a table for you? Sentence10: The booking was successful, reference number is 0F3L674U Sentence11: Thats is great, I need it for 8 people as well, and can I get a reference number as well please? Sentence12: Where will you be wanting to go? Sentence13: Great I also need to get a train on thursday leaving from cambridge. Sentence14: Sure thing. Your booking was successful. Your reference number is : WOWBP7SK . Question: Who has spoken the sentence 3? (A) User (B) System
Output: Answer: (B) System