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

Ex Input:
Sentence1: Alright. Enjoy your stay in Cambridge! Sentence2: Thank you. Have a great day. Sentence3: The train that arrives closest to 16:45 is best. I just need to know what time it leaves and arrives. Oh and of course it's ID. Sentence4: Yes. I am looking for a place to go in the west part of town. With preference to college. Sentence5: There are 6 days that arrive before 16:45 on this day. Did you have any other preferences? Sentence6: I am looking for information in Cambridge. I need a train ticket. Can you help? Sentence7: In the west part of town Clare College. The entrance fee is 2.50 pounds. Sentence8: Great that's all the information I need! Sentence9: Certainly. What is your departure location and your arrival location? Sentence10: It has been my pleasure. Feel free to contact us with any other questions you may have in the future. Sentence11: I would like to depart from London Liverpool Street and arrive in Cambridge. I would like to leave Sunday and arrive by 16:45? Sentence12: Of course! That will be TR6578 leaving at 13:39 and arriving at 15:07. The price is 13.28 pounds and it's an 88 minute duration. May I help with anything else? Question: Who has spoken the sentence 5? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: Thank you. Could you please get me the phone number? Sentence2: Yes, I was wondering what the location is of Addenbrookes Hospital. Sentence3: no, that's all thanks Sentence4: That hospital is located on Hills Rd, Cambridge. Sentence5: Happy to help. Feel free to call back if any additional questions come up. Have a good day. Sentence6: The main hospital phone number is 01223245151. Were you looking for a specific department? Question: Who has spoken the sentence 4? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: Your tickets are ready . Reference number is : NGHD22EZ . Sentence2: I also need a guesthouse with free wifi. Can you help me find one? Sentence3: On sunday. I'd like to arrive by 09:45. Sentence4: I'm looking for a train going to kings lynn. Sentence5: I have 4 trains on Sunday from Cambridge to Kings Lynn. The TR8042 arrives at 08:58. Would you like me to book it? Sentence6: What area are you looking to stay in? Sentence7: Yes. Make booking for 3 people and can I have a refernce number? Sentence8: On which day will you be traveling? Question: Who has spoken the sentence 2? (A) User (B) System

Ex Output:

Answer: (A) User