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

Example Input: Sentence1: Could you look again for places that serve North American food in the West. Sentence2: I have 4 trains that meet your needs. Would you like to book tickets? Sentence3: Great! I also need to have some north american food in the west part of town. Sentence4: I am looking for information in Cambridge. Sentence5: Booking was successful, the total fee is 8.8 GBP payable at the station . Reference number is : 8BUQLIK8 . Sentence6: Great that was all I needed today, thank you Sentence7: How about an intalian restaurnat in the west area? Sentence8: You are booked the reference number is 3ICEL34F, can I help with anything else? Sentence9: I have two. One is moderately priced, and one is cheap. Do you have a preference? Sentence10: I'm sorry, we don't have any north american restaurants in the west area. Would you like to try a different type of food? Sentence11: What type of information are you looking for? I can helpp with dining, hotels and entertainment. Sentence12: You're very welcome! Have a great day. Sentence13: The moderately priced one will be fine. I'll need it booked for the same day, same people, and at 10:15. Sentence14: book for 2 people and get me the reference number Sentence15: The only north american restaurant in the city is in the centre. Would you like more information about that? Sentence16: I need a train on friday going to ely from cambridge arrival by 13:00 Question: Who has spoken the sentence 13? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: They are quite expensive . Sentence2: I want a restaurant in the south part of town and serves panasian food. Sentence3: Sorry what type of food do they serve? Sentence4: Thank you, goodbye! Sentence5: Sorry, there are no restaurants in the south part of town serving panasian food. Sentence6: They serve italian food. Sentence7: Frankie and Bennys serves Italian food in the south part of town. The phone number is 01223 412430, and the postcode is C.B 1, 7 D.Y. Sentence8: Thank you for your help. Good bye. Sentence9: italian food please. phone number and postcode please. Sentence10: what is the price range ? Question: Who has spoken the sentence 1? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Can you help me find a restaurant? Sentence2: Royal Spice is located in the north area and the postcode is cb41eh. Sentence3: Yes, the Royal Spice is located on Victoria Avenue Chesterton and on the northern part of Cambridge. Sentence4: Great, thanks. That is all I need today. Sentence5: I'll also need the postcode and area please. Sentence6: Thank you for allowing me to help you. Have a great day. Sentence7: Are you looking for a particular style of food? Sentence8: I'm actually looking for a particular restaurant recommended to me by the name of royal spice. Sentence9: Sure! It is Indian food. Sentence10: May I ask what type of food does Royal Spice serve? Question: Who has spoken the sentence 3? (A) User (B) System
Example Output:
Answer: (B) System