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

Ex Input:
Sentence1: ok thank you so much Sentence2: Yes, can you provide me the travel time and the price as well? Sentence3: I would be happy to book that for you. Are you travelling alone? Sentence4: That is all I need today thank you for your help. Sentence5: TR0721 departs at 11:50. Would you like me to book it for you? Sentence6: Absolutely! I have 70 trains going from cambridge to ely. Do you have a departure and/or arrival time? Sentence7: The address is the grafton centre, east road. Unfortunately, there isn't an entrance fee listed. Would you like information on an alternate attraction? Sentence8: I am looking for places to go in town located in the centre of town. Sentence9: There is the Vue Cinema downtown. If that interests you, their phone number is 08712240240. Sentence10: No that's okay. However, I am also looking for a train from Cambridge to Ely, could you help me find one? Sentence11: You're welcome, have a great day. Sentence12: Price is 3.52 pounds. Duration is 17 minutes. Sentence13: Yes, i would like to leave Saturday after 11:30 Sentence14: What is the entrance fee and the address? Question: Who has spoken the sentence 8? (A) User (B) System

Ex Output:
Answer: (A) User

Ex Input:
Sentence1: Enjoy your day. Good bye. Sentence2: The address is colville road, cherry hinton. Sentence3: That is all I need, thank you. Sentence4: Sure, I can get you aboard a 15:21 arriving at 17:06. Would you like me to book a seat aboard TR9839? Sentence5: Sounds good. What is the postcode, please? Sentence6: You're welcome! Have a great day! Sentence7: Of course. The Cherry Hinton Village Centre has multiple sports in the east end of town. Sentence8: There are quite a few running all day to many different stations. Where would you like to go? Sentence9: I need a train leaving cambridge on thursday. Sentence10: I would like to go to Leicester and get there by 18:45 Sentence11: The postcode is cb19ej. Is there anything else I can help you with? Sentence12: Good bye. Sentence13: Thank you for using our service. have a good day! Sentence14: Oh wait! Before you go, can you give me some information on the cherry hinton village centre? Sentence15: Yes, may I have their address, please? Sentence16: Not right now. Thanks for the information though! Have a great day! Goodbye. Question: Who has spoken the sentence 4? (A) User (B) System

Ex Output:
Answer: (A) User

Ex Input:
Sentence1: Yes, it departs from Cambridge Sentence2: The TR7075 meets your criteria. It leaves at 5:00. Would you like to make a booking? Sentence3: Does that train depart from Cambridge? Sentence4: As early as possible in the morning. Sentence5: Why did I ask this? Of course it would be cambridge Sorry, my mistake. Please book me for 1 person and I need a reference number. Sentence6: Your total is 23.6 GBP, which you will pay at the station. Your Reference number is : PQ7PVOTI . Sentence7: No how about you pick on and give me the entrance fee if any and the phone number please Sentence8: The museum of classical archaeology has free admission and its phone number is 01223335153. Do you need anything else? Sentence9: Are there any museums you can recommend? Sentence10: You are very welcome! Safe travels! Sentence11: Well, there are 23 museums to choose from. If you give me a specific area I can narrow down the choices. Sentence12: Wonderful, thanks for your help today. Sentence13: Great I'm also looking to travel to london kings cross on monday by train Sentence14: Did you have any preference for departure or arrival times? Question: Who has spoken the sentence 9? (A) User (B) System

Ex Output:
Answer: (B) System