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

Example Input: Sentence1: The Cambridge Belfry is a hotel on the west side and is inexpensive. Their phone number is 01954714600. Sentence2: Can I get their postcode please? Sentence3: What can you tell me about Finches Bed and Breakfast? What area are they in? Sentence4: Yes, I'll also need a taxi to commute between the two places. I'll need to arrive at the restaurant by the dining time. Sentence5: Chiquito restaurant and bar is in the south area, what time would you like me to book your 4 people for? Sentence6: That's great. Everything is set. Thank you for helping me. Goodbye. Sentence7: i booked your taxi. it will be a blue lexus coming. their phone number is 07566783718. Sentence8: The table has been booked. Your reference number is PQPB99PP . Can I help you with anything else? Sentence9: You're welcome, have a great day! Sentence10: yes four people for Friday at 17:30 Sentence11: Postal is cb30nd, and if you need to call them they can be reached at 01223276653, any thing else that I can assist with? Sentence12: Okay, how about Mexican food in the south? I'll be needing a table for 4 this Friday. Sentence13: finches bed and breakfast Is in the west, it is cheap, 4 star guesthouse, free internet and parking. Do you need anything else? Sentence14: I would like an inexpensive hotel on the west side of town. Question: Who has spoken the sentence 1? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: I need help, i just been the victim of a robbery. Sentence2: You are most welcome! Sentence3: Sure, here it is: Parkside, Cambridge. Sentence4: I am not hurt but I need to get in touch with the police, can you send me the address? Sentence5: Are you hurt? Sentence6: Thank you for your help Question: Who has spoken the sentence 4? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: I'm leaving on sunday, not saturday. Can you make sure that's correct? And I want to arrive by 21:00 Sentence2: I need a train departing from Cambridge. Sentence3: Ok, where will you be going? Sentence4: I am so sorry about the mix-up in days. I have TR0189 arriving Sunday at london liverpool street at 17:27. Would this be acceptable? Sentence5: And what time would you like to leave after or arrive by on saturday? Sentence6: I will be going to London Liverpool Street on Sunday. Sentence7: Well, I'm glad I could help. Have a safe trip. Goodbye. Sentence8: thanks so much, thats all i needed Question: Who has spoken the sentence 2? (A) User (B) System
Example Output:
Answer: (A) User