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

Example Input: Sentence1: Great I also need a taxi to take me between the two places and get me to the restaurant by 20:00 Sentence2: You are most welcome. May I help you with anything else, such as attractions? Sentence3: The University Arms is a 4 star hotel on Regent Street. Would you like me to make a reservation there? Sentence4: Booking was successful. Reference number is : VJQM2DFY . Anything else I can do for you? Sentence5: Is that in the centre area also, and in the expensive price range? That is what I'm looking for. Sentence6: In the centre, please Sentence7: Perfect!. Thank you for your help! Sentence8: Great, can you book for 1 person and 4 nights starting Wednesday. Sentence9: Have a great day! Sentence10: Yes, University Arms Hotel is a 4-star hotel in the expensive price range. Would you like to make a reservation? Sentence11: There are 33 expensive restaurants in the centre of town. Is there a specific type of cuisine you were looking for? Sentence12: Sure, which part of town did you want to eat in? Sentence13: Booking for the taxi complete look for a grey bmw car contact number is 07434690950 to arrive at the restaurant by 20:00 Sentence14: You have been booked at the Bedouin on Wednesday at 20:00 for 1 person. Your reference number is 29KJKZOD . Is there anything else I can help you with? Sentence15: I'm visiting the centre and want to go all out on the experience. Can you help me find an expensive restaurant? Sentence16: I need a place to stay. Sentence17: no, just surprise me. I need a reservation for 1 person at 20:00 on wednesday. Sentence18: No thanks, that's all I needed. Question: Who has spoken the sentence 15? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Kymmoy is a great Asian Oriental place in the center of town, but it's expensive. Sentence2: Is there a Oriental restaurant in the City Centre that is in the expensive price range? Sentence3: I have 2 matches. Do you have a type preference? Sentence4: Thanks. I'm also wanting to see if there's someplace to get polynesian food in the centre of town. Sentence5: That's all I will need. Thank you! Sentence6: Where is it located? Sentence7: Please help me find a hotel to stay at in the centre that has a 4 star rating. Thanks! Sentence8: Thank you for using the Cambridge TownInfo centre. Please have a pleasant day. Sentence9: There are no Polynesian restaurants in the centre. Sentence10: I want an expensive place with free wifi. Sentence11: Its location is on Regent Street. Sentence12: That narrows it down to one choice, the University Arms Hotel. It meets all of your requirements, plus has parking. Would you like me to check availability? Question: Who has spoken the sentence 10? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: sure thing! We have museums, entertainment and a boat. Anything there catch your fancy? Sentence2: I'm looking for a place to go in the east. Sentence3: Come to think of it, I think I may need a taxi to get me between the two. Can it get me from Cherry Hinton to Anatolia by 17:30? Sentence4: Great, thank you. Sentence5: It was a pleasure to help. Have a wonderful day. Goodbye. Sentence6: You pick something in the east for me. I'll need the address, postcode and entrance fee. I'm also wanting information on Anatolia. Thank you! Sentence7: Okay, let's book a table at the Anatolia for Monday at 17:30. I'll need it booked for 3 people. Sentence8: All done, your reference number is M5W4NO7F . They will hold your table for 15 minutes. Can I help you with anything else? Sentence9: Thank you so much that is everything, I will be putting you on my Christmas Card list, you are awesome! Sentence10: Yes, not a problem. I have a blue lexus booked for you. The contact number is 07234258903. Sentence11: You're very welcome. Now, the Anatolia is a moderately priced turkish restaurant located in the city centre. Sentence12: No that is all I need today. Sentence13: It is always my pleasure. Can I help you with anything else? Sentence14: I actually haven't been to Cambridge before. Can you tell me a few types that might be in that area? Sentence15: Lets start with the attraction information first. Cherry Hinton Water Play is a free park located at cherry hinton hall, cherry hinton road and the postcode is cb18dw. Sentence16: Is there a certain type of attraction you'd like to see? Question: Who has spoken the sentence 4? (A) User (B) System
Example Output:
Answer: (A) User