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

Example Input: Sentence1: Okay. Sorry for the mix-up. Thanks for checking. Sentence2: The travel time is 105 minutes and the cost is 37.80 pounds. Sentence3: I'm looking for something in the expensive price range. Sentence4: I would like to recommend Ugly Duckling. Would you like me to make reservations for you? Sentence5: Yes, a table for 1 at 20:30. But could you check the train again? I need to leave from Liecester, not arrive there. Sentence6: No you have been a great help, thanks. Sentence7: TR6723 leaves on monday from cambridge arriving in leicester at 16:06. Would that work for you? Sentence8: Now that your reservation at Ugly Duckling is taken care of, is there anything else I can assist you with today? Sentence9: We have 77 options available. Is there a certain day you want to travel? Sentence10: I have your table for 1 booked at the Ugly Duckling, Monday at 20:30. The reference number is YDG81NJ5 . Just a moment while I check on the train. Sentence11: Yes, I'd like to leave on Monday, going to Cambridge from Leicester. Sentence12: It was a pleasure to help you. Thanks for using our service. Goodbye. Sentence13: Okay, I also need a Chinese restaurant in the centre, please. Sentence14: Could I have the travel time and price for that particular train? Sentence15: Yes I can book that for you if you would like. Sentence16: I have 10 restaurants in the centre area that have chinese. Do you have a certain price range in mind? Sentence17: Yes, that would be great. Thank you. Sentence18: I am looking for a train that leaves Cambridge going to Leicester arriving by 16:15 Question: Who has spoken the sentence 5? (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: What is your price range? Sentence2: book for 5 people and get me the reference number Sentence3: Could you try the moderate price range to see if there are any available? Sentence4: I need to find a place to stay that has 4 stars and has free wifi Sentence5: Great. Are you looking for a train, hotel or attractions to visit while in Cambridge? Sentence6: Congratulations, you are all booked! The total fee is 189 GBP payable at the station.Your reference number is : RR4BSBW5 . Is there anything else I can do? Sentence7: Sorry there is no guesthouse fitting the description you asked for Sentence8: It should be expensive and a guesthouse. Sentence9: You're welcome. Is there anything else I can do for you? Sentence10: I am planning a trip in Cambridge. Sentence11: No thank you, I appreciate your help today. Sentence12: Yes there are 11. I recommend the Acorn Guest House. Would you like a reservation? Sentence13: I need a train that leaves Cambridge on Wednesday to arrive in Leicester by 12:15 please. Sentence14: Sure, for 5 people for four nights starting Wednesday. Sentence15: the TR9366 train arrives at 12:06. Sentence16: Thank you for your help. Sentence17: Okay I have booked that and your reference number is HUH8HH95 . Sentence18: Your welcome, have a great day! Question: Who has spoken the sentence 10? (A) User (B) System
Example Output:
Answer: (A) User