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

Example input: Sentence1:i need a place to dine in the center thats expensive Sentence2: I have several options for you; do you prefer African, Asian, or British food? Sentence3: Any sort of food would be fine, as long as it is a bit expensive. Could I get the phone number for your recommendation?Question: Who has spoken the sentence 2? (A) User (B) System
Example output: Answer: (A) User
Example explanation: The sentence 1 is said by a user because the intent of it says that the information has to be gathered from the system
Q: Sentence1: Sure, we have Milton Country Park located in the north in Milton. There phone number is 01223420060 & postcode is cb46az. Sentence2: Your arrival time for TR6833 is 21:07, with a travel time of 88 minutes. Price is 16.60 pounds per ticket. Sentence3: No problem, glad to be of help! Sentence4: What are some places I could visit that are in Cambridge? Sentence5: Ok, great thanks. I also need to find a train going to cambridge. Sentence6: I would like the travel time, arrival time and price, please. Sentence7: There are several great places to visit in cambridge. What type of attraction do you prefer? Sentence8: Sure thing! How many tickets will you be needing? Sentence9: I have 1,414 possible options for you to take. Is there any way for you to narrow down which one you need? Sentence10: I need a train to leave on Tuesday after 18:00 from London Liverpool street going to cambridge. Sentence11: TR6833 leaves at 19:39 and arrives in Cambridge at 21:07 for 88 minutes of travel. It costs 16.60. Sentence12: TR6833 is a train that matches your requirements, would you like that? Sentence13: That was all the info I needed today, thank you. Sentence14: Thank you. I would like to book that train. Sentence15: Thank you, that's all I need for now. Sentence16: I would like to visit a park on the north side. Question: Who has spoken the sentence 5? (A) User (B) System
A:
Answer: (B) System