Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: I'll be happy to help- but I need to know what region your hotel is in first. Sentence2: It was my pleasure. Have a good evening. Sentence3: I have about 44 different attractions in the centre of town. Lots of architecture, colleges, boating, cinemas, concerthalls, museums, nightclubs, swimming pools, and theatres. What interests you? Sentence4: I have made that reservation for you. Your reference number is K7HFUCR6 . Is there anything else I can help you with? Sentence5: I have no food preference, but I would prefer an expensive restaurant. Sentence6: Great Saint Mary's Church is located in Market Square, cb23pq and the entrance fee is 2 pounds. Would you like a booking? Sentence7: I am also looking for an attraction in the same area I will eat. Sentence8: I'm in the centre of town. Sentence9: I like great saint mary's church. Need some info on it? Sentence10: We have a lot of restaurants available in the city centre. Do you prefer a certain type of food? Sentence11: Yes. Please book for 7 people on Thursday at 12:30. Sentence12: The Bedouin is an African restaurant that offers a high quality experience. Would you be interested? Sentence13: Hi there. Real quick. Having a blast. I want a REALLY good restaurant not too far from my hotel. What do you have? Sentence14: Can you recommend a place? Sentence15: No thank you that will be all Sentence16: Yes, how much is the entrance fee for st. mary's church? Question: Who has spoken the sentence 7? (A) User (B) System
Output:
Answer: (B) System