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

Ex Input:
Sentence1: I am looking for a train that will depart from Norwich on Sunday Sentence2: Sure thing! Your table is reserved. Your reference number is OY2LNXFW . Is there anything else I can assist you with today? Sentence3: I am traveling to Cambridge and would like to find a local restaurant. I want to arrive by train at noon. Sentence4: TR4202 is the one that leaves at 7:16 and it costs 14.08 pounds per ticket. Would you like me to book it for you? Sentence5: No, that will be all. Thanks! Sentence6: Hi there, let's start with the train arrival, where would you be travelling from? Sentence7: How about 7:16? What is the price? Sentence8: The copper kettle will be fine. Yes please book a reservation. Sentence9: Goodbye and have a good day. Sentence10: Yes that would be great. I am also looking for a place to dine for the night. Do you have any suggestions? Sentence11: Is the restaurant moderately priced? If so, please book a table for 5 at 18:00 and send me the reference number. Sentence12: My recommendation would be the Ugly Duckling, a Chinese restaurant in the centre of town. It is located at 12 St. Johns Street City Centre. Sentence13: No, I'm sorry the ugly duckling is in the expensive price range. The copper kettle serves british food and is moderately priced. Would you like a reservation for it? Sentence14: There are trains every hour on the :16 that will get you there by noon, beginning at 5:16. Which would you prefer? Question: Who has spoken the sentence 12? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: I am not looking for British, I am looking for scottish food. Sentence2: I am looking for something in centre of town then Sentence3: I'm sorry but there are no moderately priced Scottish restaurants in town. Would you like a different type of food? Sentence4: I've booked your reservation. Is there anything else you need? Sentence5: Yes I have many moderately priced venues in the center of town serving British food if you like. Sentence6: I am looking for a moderately priced Scottish restaurant Sentence7: I'm so sorry but it seems that I don't show any that will suit what you are looking for. Would you like to try a different price range or type? Sentence8: There is la tasca. They are located at 14 -16 Bridge Street. Would you like to book it? Sentence9: Can I have a reference number please? Sentence10: Thank you too, good bye. Sentence11: Thank you. Have a lovely day. Sentence12: Yes, it's XXNQ81IE . Sentence13: Yes, Could you look for a Spanish restaurant instead? Sentence14: Yes please. Could you give me a table for tuesday at 12:00 for 2 people please. Question: Who has spoken the sentence 12? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: Can you help me find a place to dine? Sentence2: Booking was successful. The table will be reserved for 15 minutes. Reference number is : 4O6WBUD1 . anything else today? Sentence3: Is there anything else you need today? Sentence4: Is there a specific area of town you would like? Sentence5: Churchhill College is in west and its a college the post code is cb30ds Sentence6: What sort of attraction would you like? Sentence7: Ok, there are six. They are all expensive except for one. Sentence8: I would recommend the Meghna for you. Should I make a booking for you? Sentence9: I am also looking for somewhere to go in the same area as the restaurant Sentence10: Okay great, thank you. Sentence11: Thank you for contacting the Cambridge TownInfo centre. Goodbye Sentence12: Whatever is popular, I just need the attraction type on postcode of whatever you pick Sentence13: I am looking for something in the moderate price range, please. Sentence14: Yes, please. Can you book me a table for 5 people at 12:45 on Wednesday? Thanks Sentence15: No, that will be all. Thank you! Sentence16: I'd like an indian restaurant in the west. Question: Who has spoken the sentence 2? (A) User (B) System

Ex Output:

Answer: (A) User