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

Input: Consider Input: Sentence1: 5 nights, please. Sentence2: Sure. Please book five tickets for me and reply with the reference number. Sentence3: It's booked and your reference number is LFE8G8CE . The address is 154 chesterton road and postcode is cb41da. Anything else I can do for you? Sentence4: Where will you be departing from? Sentence5: Enjoy your visit. Please give us a call if you need further assistance. Sentence6: 5 people starting on Sunday. Sentence7: Yes, what area would you like to stay in? Sentence8: Great, let's book that one. Please send me the address, postcode and reference number. Sentence9: Booking was successful, the total fee is 22 GBP payable at the station. Reference number is : BUBQRD4R . Sentence10: Yes I also need a train that leavers after 12:00 going to ely. Sentence11: There is the Acorn guesthouse in the moderate price range and 4 stars. It also has free wifi and parking. Sentence12: There is no train leaving 12:00, but train TR5484 leave 13:50 do you want to adjust your time? Sentence13: Don't care. but I'd like a place that's Moderately priced and offers free WiFi. Sentence14: East London. Thanks Sentence15: How many days do you plan on staying? Sentence16: That is all I need, good bye. Sentence17: How many people would you like it booked for and for what days please? Sentence18: Hi, I am hoping to find a 4 star hotel room. Can you recommend one for me? Question: Who has spoken the sentence 9? (A) User (B) System

Output: Answer: (B) System

Input: Consider Input: Sentence1: How about TR9382? Sentence2: I would like to leave on Sunday. Sentence3: I think that'll work. I need to reserve two seats, can you help me with that? Sentence4: Booking was successful, the total fee is 7.04 GBP payable at the station. Reference number is : 6NJA0V8R . Sentence5: You're very welcome. Have a great day. Sentence6: Well I need to leave after 14:45, so if it is after that time that'll work. Sentence7: Thank you. That's all I need for now! Sentence8: Hi. I'm looking for a train from ely to cambridge, if there is one. Sentence9: TR9823 will leave at 15:35, how does that sound? Sentence10: Okay, what day do you want to leave? Question: Who has spoken the sentence 5? (A) User (B) System

Output: Answer: (B) System

Input: Consider Input: Sentence1: What type of food are you interested in? Sentence2: that is all the information I need today thank you. Sentence3: Okay. Why type of food do they serve and I need the postcode then too please Sentence4: Great. Thanks for your assistance! Sentence5: Do you have any attraction type in mind? Sentence6: I am looking for information on attractions in the west side of town. Sentence7: Not really, but I do need a postcode. Sentence8: You can visit the Cambridge and County Folk Museum, it is located at 2-3 castle street and the admission price is 3.50 pounds. Sentence9: You're welcome. Have a great day. Sentence10: You are welcome. I forgot to get you the postcode for Cambridge County you asked for. It is cb30aq. Will that be all for today? Sentence11: thanks! can you help me find a restaurant in that area? I want to spend a lot of money Sentence12: I would suggest graffiti Sentence13: I'm open to suggestions. Sentence14: Graffiti serves British food, and they're located in postcode cb30lx. Question: Who has spoken the sentence 10? (A) User (B) System
Output: Answer: (A) User