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

Example Input: Sentence1: I'm just looking for something fun to do in the centre of town. Do you have any recommendations? Sentence2: I am checking on the train schedule from Peterborough to Cambridge. Sentence3: I will book it myself. Sentence4: What day do you want to depart? Sentence5: i want to depart on thursday. Sentence6: Can I get the phone number please? Sentence7: I also need an attraction. Sentence8: thank you and enjoy your stay. Sentence9: No thank you. That is all for today. Goodbye Sentence10: OK - is there anything else I can help you with today? Sentence11: TR418 leaves at 10:19. Whould you like me to book it? Sentence12: Sure many trains use that route. It would be helpful if you could narrow down a specific travel time. Sentence13: I want to leave after 10:00. Sentence14: Sure, their number is 08712240240. Is there anything else I can help with? Sentence15: Ok, I can help you with that. What type of attraction are you looking for? Sentence16: I'd recommend Vue Cinema. Would you like more information? Question: Who has spoken the sentence 13? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: No, that's all I needed. Thank you for your help - goodbye! Sentence2: I will take the one that arrives at 15:08. can you make me a booking for 8 people on Wednesday? I will need a reference number. Sentence3: The train should depart from Cambridge on Wednesday and headed for Stansted Airport. It should arrive by 15:15. I would also like you to make a booking for 6 people. Sentence4: I'm looking for a train. Sentence5: I have two trains that would suit you. One arrives at 14:08 and the other at 15:08. Do you have a preference? Sentence6: I have 2,828 trains with different routes, to help narrow it down, where will you be departing/arriving, and what day/time? Sentence7: It was a pleasure to assist you. Please use us again for your future needs. Have a good day. Sentence8: Sure thing! I've booked the train for 8, and your reference number is I62H3VUY . Is there anything else I can do for you today? Question: Who has spoken the sentence 1? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Have a wonderful time. Sentence2: Also, I want a taxi to commute between the two places. Sentence3: Thai food sounds good. Could you check for a restaurant again in the centre of Cambridge? Sentence4: The address and postcode are 24 Green Street City Centre, CB23JX. Can I assist you any further today? Sentence5: yes, i'd like the phone number please. Sentence6: Thanks for the help, that is all for today. Sentence7: Sorry don't have any eastern european restaurants. Sentence8: I'm sorry, there aren't any Eastern European eateries in the centre. Can I check another part of town for you, or look for a different type of cuisine? Sentence9: What type of food are you looking for? Sentence10: The phone number is 01223354382. Can I help you with anything else today? Sentence11: Is there another price range or different cuisine you might like information on? Sentence12: I have your taxi booked. It will be a red lexus and your contact number is 07308367931. Is there anything else I may assist you with? Sentence13: I am looking for Eastern European food. Sentence14: Sure. I am looking for a restaurant near the centre of Cambridge. Sentence15: I need an expensive restaurant with Eastern European food Sentence16: I want to get picked up from the attraction by 23:45 and taken to the restaurant. Please make the taxi booking and give me the relevant info Sentence17: Thank you, that is all. Sentence18: The postcode is CB12IF and the entrance fee is unknown. Their phone number is 01223474144 if you would like to call them to find out. Sentence19: Sure, I can help you with that. Do you want to get picked up at Bangkok City or from The Man on the Moon? Sentence20: I have reservations Bangkok City restaurant but forgot to get the address and postcode. Sentence21: I found that attraction it is located at 2 norfolk street. The phone number is 01223474144. Sentence22: Yes, I'm also looking for a place called The Man on the Moon? Sentence23: Bangkok City is an expensive thai place in the centre of town, would you like more info or a booking? Sentence24: What is the postcode and entrance fee? Question: Who has spoken the sentence 21? (A) User (B) System
Example Output:
Answer: (B) System