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

Example Input: Sentence1: No that's all. Thanks. Bye! Sentence2: Yes, that's right. Which of the 12 options would you recommend? Sentence3: Yes, would you try 2 nights instead, please? Sentence4: That's great. Please make a reservation for 1 on Monday. I'd like to stay 3 nights. Sentence5: Your booking was unsuccessful. Would you like another day or a shorter stay. Sentence6: Are they expensive? I would like something nice. And do they have free parking? Sentence7: Please check for something expensive first. If you don't see one, then we can come back to that. Sentence8: Booking was successful. Reference number is : JAKCI7JO . Is there anything else we can help you with today? Sentence9: How about Archway House? It's at 52 Gilbert Road cb43pe, and the phone number is 01223575314. Would that work for you? Sentence10: Yeah, that's fine. Oh, and I need free parking! Sentence11: There is the Acorn Guesthouse that is located in the north side of town. Would you like me to make a booking? Sentence12: I hope you have a great rest of the day. Sentence13: Can you tell me about a nice guest house in your city? I don't care how much it costs. Sentence14: They're a moderate guesthouse with free wifi and parking. Would you like to book a room? Sentence15: So to clarify, you need a guesthouse with free parking, and a moderate price range is acceptable? If so, I have 12 different options for you. Sentence16: It looks like all of the places in the expensive price range are hotels rather than guesthouses. Would you like to consider a different price range? Question: Who has spoken the sentence 11? (A) User (B) System
Example Output: Answer: (B) System

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: I have several options for you; do you prefer African, Asian, or British food? Sentence2: Yes. Can you book it for me? Sentence3: Sure, when would you like that reservation? Sentence4: Any sort of food would be fine, as long as it is a bit expensive. Could I get the phone number for your recommendation? Sentence5: i need a place to dine in the center thats expensive Sentence6: Your booking was successful. Your reference number is FRGZWQL2 . May I help you further? Sentence7: Sounds good, could I get that phone number? Also, could you recommend me an expensive hotel? Sentence8: That is all I need to know. Thanks, good bye. Sentence9: There is an Afrian place named Bedouin in the centre. How does that sound? Sentence10: i want to book it for 2 people and 2 nights starting from saturday. Sentence11: Thank you so much for Cambridge TownInfo centre. Have a great day! Sentence12: Bedouin's phone is 01223367660. As far as hotels go, I recommend the University Arms Hotel in the center of town. Question: Who has spoken the sentence 6? (A) User (B) System
Example Output:
Answer: (A) User