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

Example Input: Sentence1: That would be TR5906 at 21:39 on Monday. Sentence2: The first train after 21:15 works for me. I need to book it for three people, please provide the reference number. Sentence3: Thank you so much for all your help. Sentence4: Great, have a wonderful day! Sentence5: Will you be needing anything else today? Sentence6: I am interested in cinemas specifically. Sentence7: There are 70 trains that leave from London Liverpool Street to Cambridge, what day and time would you like to leave? Sentence8: Excellent. I'd also like a train please. One that leaves from london liverpool street to cambridge. Sentence9: I can certainly book that for you! However, could you let me know what day of the week you'll be travelling? Sentence10: I'm looking for places go to in the south of town. Sentence11: No thank you. That is everything I need at this time. Sentence12: I have booked 3 tickets for you for 49.8gbp payable at the station. your reference number is ETOI91ON Sentence13: The Cineworld Cinema is in the South part of town. Their phone number is 00872208000. Would you like their address? Sentence14: I will be traveling on Monday, and I will need the reference number as well. Sentence15: Great! Thank you. What a relief. Sentence16: Yes, please give me the address and postcode. Sentence17: It's located at cambridge leisure park, clifton way and the postcode is cb17dy Sentence18: The attraction types in the south area are theatre, park, nightclub, museum, cinema, and entertainment. Which one are you interested in? Question: Who has spoken the sentence 6? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: I would like a restaurant serving swedish food in the north part of town. Sentence2: I don't care. Sentence3: What is the address, phone number, and price range? Sentence4: I'm sorry but there are no Swedish serving restaurants in that area. Would you like to expand your search? Sentence5: Thank you goodbye. Sentence6: City Stop Restaurant is an expensive restaurant on the North side of town. Sentence7: The Royal Spice restaurant has a cheap price range. Sentence8: Is there a restaurant on the North side of town? Sentence9: How about indian food? Sentence10: it's address is Victoria Avenue Chesterton, and phone number is 01733 553355. Sentence11: There are several restaurants in the north part of town. Do you have a preference of price range or type of food? Sentence12: Good bye. Question: Who has spoken the sentence 2? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Please feel free to contact us again for further assistance. Good-bye. Sentence2: Great news! Your booking was successful and I have a reference number for you. It is PL4JEQ9A . Sentence3: Yes please I need a booking for 4 people and 2 nights starting from friday. Sentence4: How about a different hotel in the same price range? Sentence5: Can you find me a place to say in the centre that includes free wifi? Sentence6: I have the Cityroomz hotel which is in the moderate range with internet and no parking. Would you like to book this hotel? Sentence7: Are there any in the moderate price range? Sentence8: Thank you for your help. Sentence9: I can recommend the Alexander Bed and Breakfast. It is a guesthouse in the cheap price range. Sentence10: How about the el shaddai, they have free internet and free parking? Sentence11: Thank you very much. I will. Sentence12: You are very welcome. Please enjoy your stay. Sentence13: That on is not open then, shall I try another? Sentence14: That will be fine. Question: Who has spoken the sentence 5? (A) User (B) System
Example Output:
Answer: (B) System