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 have pulled up City Stop Restaurant. What information do you need? Sentence2: I would like to book a table there for 4 peole on saturday at 19:45. and can i please get a reference number? Sentence3: Alright, thank you very much. That's all I need for now. Sentence4: Booking was successful. The table will be reserved for 15 minutes. Reference number is : OMKMNJEM . Sentence5: I am looking for information about city stop restaurant? Sentence6: You are welcome. Goodbye. Question: Who has spoken the sentence 3? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: That was a successful booking, your reference number is T6C83P46 . Sentence2: Thank you so much! Sentence3: Not really. Anything would be fine. Sentence4: Yes, please. I'd like to book it for 6 people and 5 nights starting from monday. Sentence5: I'm not too concerned with location, but I would like it to include internet and have a 4 star rating please. Sentence6: Do you have a preferred location or price range? Sentence7: Yes, how about 3 nights? Sentence8: I recommend the Acorn Guest House. Would you like a room there? Sentence9: I'm looking for a guesthouse with free parking. Sentence10: Booking unsuccessful. Want to try for a shorter stay? Sentence11: There are 16 guesthouses that meet those requirements. Any preference on price range? Sentence12: You're so welcome. Thank you. Question: Who has spoken the sentence 1? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Not yet. What time does TR8705 leave Kings Lynn? And what do the tickets cost? Sentence2: It leave kings lynn at 08:11 and the tickets are 9.80 pounds per ticket. Would you like me to book you tickets? Sentence3: I hope you have a pleasant trip! Sentence4: Sure! Golden Wok is located at 191 Histon Road Chesterton. Their postcode is cb43hl. You can reach them at 01223350688. Anything else I can help with? Sentence5: Im looking for food its name is called golden wok, can you get me address, postcode, and phone number Sentence6: great, the TR8705 can get you there by 8:58. would you like tickets? Sentence7: to cambridge and should arrive by 09:00 Sentence8: Ok is there anything else I can help you with ? Sentence9: OK, and where will you be traveling to? Sentence10: Excellent! Do you need assistance with transportation? Sentence11: No, that's all at this time. Thank you. Sentence12: No I don't need you to book it. Sentence13: I also looking for a train. The train should depart from kings lynn and should leave on thursday Sentence14: I am planning a trip to Cambridge Question: Who has spoken the sentence 7? (A) User (B) System
Example Output:
Answer: (B) System