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

Ex Input:
Sentence1: You're very welcome. Thank you and goodbye! Sentence2: The earliest train departs Leicester at 05:09 and arrives in Cambridge at 06:54. The cost is 37.80 pounds per ticket. Sentence3: That's all that I need. Sentence4: Any of those will work. Which one is your favorite and where is it located? Sentence5: I'll be departing from Leicester, headed to Cambridge. What do the prices look like? Sentence6: No problem. There are a lot of other options like boating, cinema, colleges, a concerthall, museums, nightclubs, a park, theatres and swimming pools. What are your interests? Sentence7: I also need a train on Wednesday, arriving by 19:00. Sentence8: I'm looking for something to do in the centre of town. Sentence9: Travel time is approximately 105 minutes. Sentence10: Would you like any more information on other attractions? Sentence11: I would really like it to be a attraction type. Sentence12: What is the travel time? Sentence13: Great! I found a lot of things that match what you're looking for. Do you like architecture? Sentence14: I can help you with that. What are the departure and destination cities you were looking for? Sentence15: No, that will be all. Thank You for all your help. Sentence16: I'd try the cambridge contemporary art museum, at 6 trinity street. Question: Who has spoken the sentence 13? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: I am having difficulty booking either of the. Can you find another day or time that would suit you? Sentence2: Absolutely. Can I suggest the Warkworth House at a moderate price range, or the Autumn House at a cheap price range. Do either of these interest you? Sentence3: OK, you're all booked for 3 nights at the Warkworth House, starting Thursday. Your reference number is AC1NVW47 . Can I help with anything else today? Sentence4: I would consider both. I need to book for three people and 5 nights starting on Thursday. Can either of them offer that? Sentence5: There are 6 possible places that fit your request. Would you like more information or to add additional search preferences? Sentence6: Good Afternoon, I am looking for a place to stay on the east side in a guest house Sentence7: Can you see if any of them offer free parking? Sentence8: You're welcome. Goodbye! Sentence9: I really need to stay during that time frame. Would you mind checking again? Sentence10: No, that will be all. Thanks! Sentence11: Honestly, any price range will do. Can you suggest one for me and help me with booking a room? Sentence12: 5 of the guesthouses offer parking. What is your price range preference? Question: Who has spoken the sentence 9? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: I'd like a recommendation that is able to book a table for 5 people at 14:45 on Friday. Sentence2: Alright, I booked you a table for 5 on Friday at 14:45 at the Kohinoor. Your reference number is 20OK4WP8 . Can I help you with anything else? Sentence3: I'll need to book a taxi from the Cambridge Museum of Technology to the Kohinoor, arriving by 14:45. Sentence4: I'm looking for a place to dine that's in the cheap price range and that serves Indian food. Sentence5: The phone number is 01223368650 and the post code is cb58ld. Can I help you with anything else? Sentence6: Would you like a recommendation, or do you want to specify an area? Sentence7: That sounds great! Can you give me their postcode and phone number? Sentence8: No, you have been very helpful. Thanks so much and have a nice day. Bye. Sentence9: How about the Cambridge Museum of Technology at The Old Pumping Station on Cheddars Lane? Sentence10: I've booked your taxi. It will be a grey skoda and the contact no. is 07998309857. Is there anything else that I can help you with? Sentence11: Thanks, I'd also like to find an attraction in the east, please. Sentence12: Thank you for choosing Help Desk. Good bye. Question: Who has spoken the sentence 10? (A) User (B) System

Ex Output:
Answer: (A) User