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 am hoping you can help me with my planning. I am trying to find information on the trains. Sentence2: I would like to arrive by 13:15. Sentence3: Thank you that is all I needed. Sentence4: itshould be in the centre Sentence5: No. Can you help me find a very cheap, not shabby hotel that has free parking? Sentence6: Your booking has been changed. Your new reference number is FVTMM086 . Sentence7: I can definitely help you with that. Can you give me more information, like your departure and destination preferences? Sentence8: I have a lot of great choices to offer you. Do you have a preference to what part of Cambridge you'd like to stay in? Sentence9: Which one of them has free wifi? Sentence10: I will be departing from Stansted Airport to go to Cambridge on Wednesday. Sentence11: You're welcome, have a great day! Sentence12: There are two guesthouses: Alexander Bed and Breakfast, and El Shaddai. Would you like to stay in one of those guesthouses? Sentence13: I am getting the information up now, do you have a specific arrival or departure time? Sentence14: book for 2 people for 2 nights from wednesday Sentence15: Sorry, can you actually book it for 3 people for 2 nights, please? Sentence16: Both facilities do. Sentence17: TR6386 departs at 12:24 and arrives by 12:52. Would you like a ticket? Sentence18: I made your reservation for 2 people for 2 nights starting Wednesday at the Alexander Bed & Breakfast. Your reference number is 8JX02F2T . Is there anything else I can do? Question: Who has spoken the sentence 13? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: The area doesn't matter. I would like free wifi though, if possible. Sentence2: Not really, how about 4 star? Sentence3: Do they also have free parking? Sentence4: I have many options. Do you have a preference for the area you would like to stay in. Sentence5: There are several moderate 4-star places to stay throughout town, but they are all guesthouses. Would a guesthouse work for you? Sentence6: acorn guest house does have free parking,would you like that one? Sentence7: Dojo Noodle Bar is a nice cn I book you a table ? Sentence8: I'm looking for a moderately priced, 1-star place to stay. Sentence9: No, I don't need a hotel booking at this time. I'd like to find a place to dine on Sunday. Sentence10: Unfortunately we do not have any moderately priced 1 star hotels in Cambridge. I'm sorry! Cityroomz has 0 stars in the centre, does that work? Sentence11: Would you like me to reserve the acorn guest house for you? Sentence12: Yes. I also need to find a place to dine that is in the center and the same price range as the hotel. Question: Who has spoken the sentence 9? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: That sounds fine. What's the price? Sentence2: Sorry, but I don't have anything leaving at 12:00 but I have train TR9781 that leaves at 11:00 and will get you there by 11:51. How does that sound? Sentence3: That's everything. Thanks for the help. Sentence4: I have trains all leaving cambridge going to london kings cross on wednesday. First one leaves at 05:00 last at 13:00 and its a 51 minute ride Sentence5: Looking for a train that leaves on Wednesday. Sentence6: I have the Cafe Jello, which has free admission. Sentence7: The phone number for Cafe Jello Gallery is 01223312112. Can I help you find anything else? Sentence8: Thanks. I'm also looking for a concerthall to visit. Are their any in the west? Sentence9: That's awesome! What's their phone number? Sentence10: One ticket will work. Sentence11: Thanks so much again! Goodbye! Sentence12: We hope you enjoy your trip. Sentence13: You're welcome, goodbye. Sentence14: I would liek to arrive by 13:00, can I book the one that leaves at 12:00 Sentence15: Unfortunately there aren't any. Could you like to try other areas? Sentence16: The ticket price is 23.60 pounds. How many tickets would you like? Sentence17: Booked! You'll pay at the station. Your reference number is: 0140Z2O7 . Sentence18: how about one that is in the type of museum. Question: Who has spoken the sentence 10? (A) User (B) System
Example Output:
Answer: (A) User