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 hear its a pretty cool place. Can I get their postcode please? Sentence2: Yeah, I need a place to stay on the south side. 4 stars if possible. Sentence3: Postal is cb17sr, they do include internet and they can be reached at 01223240089, can I help with anything else? Sentence4: i am looking for a particular attraction. Its name is called soul tree nightclub. Sentence5: You're welcome! Have a great day! Sentence6: Can you book me a stay at The Aylesbray Lodge? Sentence7: The Soul Tree Nightclub is located in the area of centre. It has an entrance fee of 4 pounds. The phone number is 01223477900. Anything else? Sentence8: The postcode is cb23qf. Do you need anything else? Sentence9: You have a great day as well! Sentence10: Thanks for using our services. Sentence11: Sure! How many are staying, how many days, and what day do you want the stay to start? Sentence12: That was everything, thanks a lot! Sentence13: No I just need the postcode, phone # and if they have internet Sentence14: We have two guesthouses that are 4 stars in the south end, The Aylesbray Lodge Guest House is moderately priced, and Rosa's Bed and Breakfast is in the cheap range. Question: Who has spoken the sentence 12? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Reference number is 29IN9CT3 for the acorn guesthouse. Sentence2: Sounds great if it is portuguese. I'll take a reservation for 7 people at 20:00 for the same day. Sentence3: Okay, how about the Acorn Guest House in the north? Sentence4: There is. How does Nandos City Centre sound? Sentence5: Okay, it was my pleasure to assist you! Bye! Sentence6: No, that's all I needed today. Thank you for your help! Goodbye! Sentence7: do you have one the is portuguese food ? Sentence8: I'm looking for information on 4-star rated guesthouses in Cambridge Sentence9: You're all set. Your reference number is 6R5W1RRE and your table will be reserved for 15 minutes. Anything else? Sentence10: I suggest the dojo noodle bar, an asian oriental restaurant, would you like to make a reservation? Sentence11: Sure. Can we spend 5 nights starting on Sunday? I am going to need room for 7 people. Sentence12: I have a number of 4 star guesthouses available, would you like to book one in a particular area? Sentence13: I would also like to eat somewhere cheap in the middle of town. Sentence14: Not really. Could you suggest one with free parking? Question: Who has spoken the sentence 7? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: I'll take any type of cuisine, then. I just need a reservation for 6 at 13:15 on Saturday. Sentence2: Unfortunately, I was not able to locate a Mexican restaurant in the south part of time. Would you like me to search for a different cuisine? Sentence3: Mexican, please. Sentence4: Okay I guess. Try booking there please. Sentence5: I am sorry. There is no japanese restaurant in the south area? Would you like to try another area or food type? Sentence6: Great! I was able to book you there and your reference number is W2A8GHG8 . Sentence7: Thank you for your help. Have a great day. Sentence8: I am looking for Japanese food in the south part of town. Sentence9: Yes please. Are you sure there are no Japanese or Mexican places in the same price range open on the south side that day? Sentence10: The Mexican place is not open then, shall I try another place to dine? Sentence11: Thank you for using the Cambridge TownInfo centre. Have a wonderful day! Sentence12: No I am sorry. But there is a Portuguese restaurant if you are interested. Sentence13: Try Mexican, then. Sentence14: There are Japanese, Italian, Modern European, Portuguese, Indian, and Mexican. Which of these do you prefer? Question: Who has spoken the sentence 13? (A) User (B) System
Example Output:
Answer: (B) System