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

Example Input: Sentence1: Perfect, I have train TR1472 that meets your criteria, would you like me to book a ticket for you? Sentence2: I can help you with that. Where are you traveling from? Sentence3: Book it for 3 people. Sentence4: Sure. Your train is booked. The fee will be 30.29 GBP and your reference number is 7FGDRE1Q . Sentence5: I need to find a place to stay as well. Can you help? Sentence6: I need to find a train into Cambridge that will arrive by 09:15. Sentence7: I will be leaving the Stansted Airport on Thursday. Sentence8: I need to know what you're looking for first. Question: Who has spoken the sentence 2? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Don't worry, I should be able to help you. Do you know which station you'll be leaving from or going to? Sentence2: What is your destination? Sentence3: Hi, I am trying to plan a trip and need some help with a train. I'm not familiar with trains at all unfortunately. Sentence4: I'm departing from leicester and I need to leave on friday. Thank you for helping! Sentence5: I also need a place to stay. Sentence6: 11 pm and I want it for three people Sentence7: I'm going to Cambridge. Sentence8: We have many great places to stay. What area would you like and do you have a price range? Sentence9: Is there a time you would like to arrive by? Sentence10: TR6539 will arrive by 22:54. Booking was successful, the total fee is 113.4 GBP payable at the station. Your reference number is IE5RK2IG . Do you need anything else? Question: Who has spoken the sentence 2? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: I am looking for a restaurant in the centre of town. Sentence2: I also need a taxi to get me between the gallery and restaurant, I want to leave the restaurant by 13:15 Sentence3: There are 2 restaurants that meet your criteria; Eraina and Michaelhouse Cafe. They are both in the centre of town. Sentence4: The Ruskin Gallery is in the centre area and the phone number is 01245493131. Would you like the address? Sentence5: I'll be happy to help you with that. Is there a certain type of food you would prefer? Sentence6: I would like a restaurant that serves european food in the expensive price range please. Sentence7: Is there anything else I can help you with today? Sentence8: Glad I could be of assistance, have a good day! Sentence9: Yes, I'm also looking for an attraction called Ruskin Gallery. Can you get me some info on that? Sentence10: Sure, their phone is 01223368786 and their address is Free School Lane City Centre cb23rh. May I help with anything else? Sentence11: No address needed, thank you. I have all the information I need. Sentence12: Great, can I have the phone number and address for Erania please? Sentence13: Alright, I have your taxi booked. It will be a red lexus, and the contact number is 07952562480 Sentence14: Thank you very much, that will be all you can do for me for today. Question: Who has spoken the sentence 1? (A) User (B) System
Example Output:
Answer: (B) System