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

Example Input: Sentence1: Can you check a swimming pool in the west of the city? Sentence2: Yes, there are no swimming pools located to the west of your city. Thank you, if you need help with anything else, contact us again. Sentence3: No thank you, that's all I needed. Sentence4: I have 3 hotels and 2 guesthouses in town centre. Would you like a cheap price range or expensive? Will you also need parking? Sentence5: Okay! Goodbye! Sentence6: I would prefer a guesthouse, and it does not need to include internet. Sentence7: If you change your mind and need a booking, we'll be here. Thanks for using our service! Sentence8: I'd prefer one in the same part of town as my hotel, are you sure there isn't one? Sentence9: We currently do not have any shown attraction in that area you are looking for. Are there any other further things I could assist with? Sentence10: Goodbye. And feel free to contact us if there's any other information you need, as well. Sentence11: The alexander bed and breakfast is a guesthouse in town centre in the cheap price range with a 4 star rating. Would you like to book a room? Sentence12: I am looking for a place to stay in the centre in Cambridge. Sentence13: I'm not showing a swimming pool in the East, but there are 2 in the North, will that work? Sentence14: I am also looking for an attraction, a swimming pool Question: Who has spoken the sentence 13? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: There are 2 expensive French restaurants. Restaurant Two Two, and Cote. Which would you like to book? Sentence2: No, that's everything I needed today. Thank you. Sentence3: Are you able to find me a french expensive restaurant? Sentence4: You're quite welcome! Thanks for contacting the Cambridge TownInfo Centre and have a great day! Sentence5: I like the sound of Restaurant Two Two, could you give me their postcode, address and phone number? Sentence6: Restaurant Two Two is located at 22 Chesterton Road, Chesterton. Their postcode is cb43ax. You can reach them at 01223351880. Any other information I can provide? Question: Who has spoken the sentence 5? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Yes please. Book a table for my party of 8 for 12:45 on Monday. Sentence2: I have made your reservation, with reference #D8E6CV1X . Can I help you with anything else today? Sentence3: I want to arrive in time for my lunch reservation. Sentence4: The good luck Chinese takeaway. Sentence5: Taxi is ready, look for a black lexus, they can be reached at 07505999310, any further questions? Sentence6: That is one of my favorite guesthouses. Do you need a reservation there? Sentence7: thank you for all the information. goodbye Sentence8: No, that's all I needed. Thank you for your help, it's much appreciated! Sentence9: What time would you like to travel? Sentence10: Yes, I am also looking for a hotel named kirkwood house. Sentence11: I also need a taxi between the two places. Sentence12: Yes please for 5 people for 5 nights from Monday please. Sentence13: That's on 82 Cherry Hinton Road. If you need to contact them for directions, their number is 01223244149. Can I help with anything else? Sentence14: Do you know the name of it? I can try and find it for you. Sentence15: I can't find a restaurant I am looking for. Sentence16: Booking was successful. Your reference number is K7VLK45Q . Will that be all? Question: Who has spoken the sentence 12? (A) User (B) System
Example Output:
Answer: (A) User