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

Example Input: Sentence1: Sure. What area would you like to stay in? Sentence2: yes postcode is cb39lh Sentence3: I'd like to stay on the westside, at a place with free parking and WiFi. Sentence4: Can you help me find a moderately priced place to stay? Sentence5: There is the Hobsons House. It is nice and is a 3 star guesthouse. Sentence6: Could you give me the postcode. Question: Who has spoken the sentence 4? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: No thank you. That is great. Sentence2: Have a good day! Sentence3: There are three british restaurants in the west. What price range are you considering? Sentence4: Thanks! Sentence5: I'm looking for meals under 30$ a person. I need to book for 3 at 16:15 on Wednesday. Sentence6: The restaurant Saint Johns Chop House is the only restaurant to your specifications with a moderate pricing. Would you like me to make a reservation? Sentence7: Your booking is successful and your reference number is CZT3LA0M . Is there anything else I can help you with? Sentence8: Yes please and I will need a reference number. Sentence9: I am looking for a German restaurant in the west. Sentence10: Enjoy your time! Sentence11: There are no German restaurants available in the west. Would you like to try a different area or different food type? Sentence12: How about one that serves british food instead? Question: Who has spoken the sentence 11? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: We have 21 entries that match. Do you have a preference on type of food? Sentence2: I guess we could move it an hour earlier, if that's better? Sentence3: No problem. Happy to help. Sentence4: Yes please. I need a table for 3 at 18:45 on a Tuesday. Sentence5: I'd like Lebanese food please. Sentence6: I want to find a moderately-priced restaurant in the centre. Sentence7: That worked. You have a table at 17:45 with reference number 2S4UXXS3 . Can I help with anything else today? Sentence8: I was unable to find you a table at that time. Is there another time that would work for you? Sentence9: That's all I needed. Thanks for your help. Sentence10: ali baba serves lebanese food in the town centre at a moderate price range. Would you like to make a booking? Question: Who has spoken the sentence 4? (A) User (B) System
Example Output:
Answer: (A) User