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

Example Input: Sentence1: Booking was successful. Your reference number is : 1F0GOZ1D . Sentence2: Can you try 4 nights instead? Sentence3: I recommen a and b guest house. Should I book that? Sentence4: We have 6 total guesthouses in the east, any more preferences? Sentence5: Not particularly. Do you have one you would recommend? Sentence6: Yes, I would like free wifi and a 4 star rating. Sentence7: I'm looking for a guesthouse in the east please. Sentence8: funky fun house would be nice for you Sentence9: Great, could I also find someplace near the hotel to go for fun? Sentence10: Unfortunately there are no rooms available for Wednesday in the East. Could I look at a different location or day? Sentence11: please, For 2 people for 5 nights starting on Wednesday Sentence12: I have six places, is there a price range you have in mind? Question: Who has spoken the sentence 6? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Price range doesn't really matter, but I do want a 4-star place with free parking and internet. Sentence2: I have 19 hotels that match that criteria. please be more specific about the area of town where you'd like to stay Sentence3: Do you prefer a formal hotel, or a guesthouse? Sentence4: OK, what price point do you want me to look for? Sentence5: Booking was successful at the alexander bed and breakfast. Reference number is : MDB2AV4K Sentence6: i need a place to stay Sentence7: The area doesn't matter. Please book for 6 people on Saturday with 4 nights stay. Sentence8: Can you give me a suggestion for a hotel and make that reservation please? Thanks. Question: Who has spoken the sentence 4? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Hello! My friends told me about a hotel called Alexander Bed and Breakfast. Can you get me some information about it, please? Sentence2: They have internet, it has a 4 star rating, and the postcode is cb12de. Sentence3: It's my pleasure. Goodbye1 Sentence4: The TR5170's trip duration is 51 minutes, and it costs 18.88 pounds. Can I help with anything else today? Sentence5: Going to london kings cross. I want to leave after 10:15. Sentence6: do they have internet? how many stars does it have? and whats its postcode? Sentence7: What is your desired destination and timeframe for travel? Sentence8: I believe that will be everything. Sentence9: Have a great trip! Sentence10: Thank you. You have been very helpful. Sentence11: No thank you. I would like the travel time and price information if you can provide it, however. Sentence12: Yes she lives in. Barbers lost his son and and sleeps and eats a lot Sentence13: Great! I will also need a train. I need to leave on Saturday and depart from Cambridge. Sentence14: The TR5170 departs Cambridge on Saturday at 11:00 and arrives in London Kings Cross by 11:51. Would you like me to book that for you? Question: Who has spoken the sentence 12? (A) User (B) System
Example Output:
Answer: (A) User