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

Ex 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

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: Thanks. You too! Goodbye. Sentence2: Get back in touch if you need help in the future. Goodbye. Sentence3: I need information on trinity college Sentence4: You're welcome! Have a great day. Sentence5: Okay, I've pulled up Trinity College. What information do you need? Sentence6: No, that is all I need today. Thank you very much! Sentence7: Ok. Trinity college is a college and the address is trinity street. Anything else? Sentence8: I need to know the attraction type and address. Question: Who has spoken the sentence 3? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: No thanks, that's all I needed. Have a good day. Sentence2: A 4 star rating please. Sentence3: I have booked a white volvo for you with Contact number: 07201581539. Can I help with anything else today? Sentence4: Ok! Whale of a time is located at Unit 8 Viking Way Bar Hill on the west side of town. Phone is 01954781018. Sentence5: How about the avalon it's a 4 star moderately priced hotel in the north. Sentence6: Great, thanks! Do I have any other entertainment options? Sentence7: I'm afraid there is nothing along those lines available. Can I change your search criteria a bit? Sentence8: Perfect. I need 5 nights for 6 people starting on Wednesday. Could I have the reference number after booking? Sentence9: Hi, I'm looking for some kind of entertainment in Cambridge? Sentence10: I would like the moderate price range. Sentence11: The whale of time sounds great. I also need a place to stay that has free internet and in the west. Sentence12: Thank you for contacting us and have a nice day. Sentence13: There are 3 options, any preference on pricing? Sentence14: Okay, I have 4 options available. Is there a price range or star rating you'd prefer? Sentence15: Can you try looking in the north? Sentence16: Yes, there is everything from parks to nightclubs. Several colleges and museums. Holy Trinity Church is a great architectural attraction. Sentence17: Booking was successful. Reference number is : BVCGE59G . anything else? Sentence18: Yes, I'll need a taxi to get to the hotel from whale of a time. I need it to leave by 06:00 Question: Who has spoken the sentence 14? (A) User (B) System

Ex Output:

Answer: (A) User