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: Galleria serves European food and is in the centre part of town and has a moderate price range. Sentence2: No restaurants serving australasian food can be found. May I find another type restaurant for you? Sentence3: Looking for someone that serves Australasian food? Sentence4: How about European food? Question: Who has spoken the sentence 3? (A) User (B) System

Output: Answer: (B) System

Input: Consider Input: Sentence1: Could you check the spelling(city centre north b and b) and try to search again? Sentence2: The TR2512 takes 51 minutes. Anything else you need? Sentence3: I will be traveling on Thursday. Sentence4: It is a cheap, 0 star guesthouse located at 328a histon road on the north side. It has free internet and parking. Phone number and postcode are 01223312843 and cb43ht. Sentence5: Yes I am looking for information on a hotel called City Center North B and B. Sentence6: Sure! give me the following information: Day of visit, number of people and number of days that you will be staying. Sentence7: I cannot find that hotel. Any other hotels you would like to find? Sentence8: You're all set. Your reference number is HOSVDEGA . Can I help you with anything else today? Sentence9: Do you have a time preference? Sentence10: Well that will not work. Sentence11: I need to arrive by 14:15. Sentence12: there are many trains but you need to tell us which day you want to travel Sentence13: I am also looking for a train into Cambridge from London Kings Cross. Sentence14: Please book for 2 people starting on thursday for 4 nights. Sentence15: enjoy your stay in Cambridge! Sentence16: The TR2512 will fit your needs. Would you like to book this train? Sentence17: The first train leaves at 5:17. Sentence18: Thank you. Are you able to book that for me? Sentence19: Not at this time. What is the travel time for that train, please? Sentence20: no that will be all thanks Question: Who has spoken the sentence 19? (A) User (B) System

Output: Answer: (B) System

Input: Consider Input: Sentence1: Are there any places in the south section of town the has to do with multiple sports? Sentence2: Do you have in attractions in a type of park in the south? Sentence3: Okay. Have a great time! Sentence4: No that was all I needed right now, thanks very much. Goodbye. Sentence5: That sounds nice. Can you give me their address, postcode, and phone number, please? Sentence6: We have 2 parks in the south. I recommend Wandlebury Country Park. Sentence7: I sure can. They are located at Wandlebury Ring, Gog Magog Hills, Babraham. Their postcode is cb223ae. The phone number is 01223243830. Can I help you with anything else? Sentence8: Unfortunately, I don't see any that are in the south. Would you like me to check in another area of town? Question: Who has spoken the sentence 1? (A) User (B) System
Output: Answer: (B) System