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

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
Answer: (B) System

Sentence1: Thank you. That's all I need. Sentence2: I was able to book it, reference number is T2SNWPJA Sentence3: Okay, the Mahal of Cambridge serves indian food and is located in the centre. Would you like me to make a reservation for you? Sentence4: I am happy to help, what was the name of the place? Sentence5: Its the huntingdon marriot. I'd like to book it for 8 people on 2 nights starting on wednesday, and I'll need a reference number. Sentence6: Can you help me look up a particular hotel that I have in mind? Sentence7: Great, thanks for that. I'm also looking for information about a restaurant called mahal of cambridge. Sentence8: Yes please book a table on Wednesday for 8 people at 17:15, I'll need a reference number. Sentence9: It was my pleasure to help. Have a wonderful night. Take care. Bye. Sentence10: Your booking was successful reference number is 1QVLVD25 Question: Who has spoken the sentence 3? (A) User (B) System
Answer: (B) System

Sentence1: Thank you for using our services. Do you need any further assistance? Sentence2: I am looking to book a train. I need to leave Cambridge and go to London Liverpool Street. Sentence3: I have a train leaving Thursday at 13:59, would you like me to book it for you? Sentence4: Not yet. I just needed to get the details. Thanks for helping me. Goodbye. Sentence5: Could you tell me when the train arrives in London Liverpool Street? Sentence6: The arrival time is by 15:27, do you want to book a seat? Sentence7: yes. i should leave after 13:45 and should leave on thursday Sentence8: That train arrives at 15:27. Would you like me to book it for you? Sentence9: No problem, I have many options for you. Do you have a particular day of the week you would like to travel, or time? Sentence10: yes pliz.may i also get the arrival time Question: Who has spoken the sentence 9? (A) User (B) System

Answer: (B) System