Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: cambridge. by 13:30 and should go to broxbourne Sentence2: No, but I'm looking for Corsican food. Sentence3: That was all thank you. Goodbye. Sentence4: Thank you for contacting us and have a nice day. Sentence5: I found 5 restaurants that serve European food all over Cambridge. I recommend the city stop restaurant on the North side. Would you like me to make a reservation for you? Sentence6: The area does not matter. But try European food please? Sentence7: Could you tell me your departure site and destination? Sentence8: No, just get me the Train ID. Sentence9: I apologize, but I could not find a Corsican restaurant meeting your criteria. Would you like to try a different food type? Sentence10: Help me find an expensive restaurant. Sentence11: I have many, what area were to looking to dine in? Sentence12: Ok, do you have a day of the week you want to travel? Sentence13: yeah i also need a train Sentence14: The train ID is TR 9605. Is there anything else you need? Sentence15: I need to travel on monday please. Sentence16: Yes can you check the same area for chinese food please? Sentence17: I have a table booked for 7 people on friday at 14:15, your reference number is JCTPEZT9 . Can I help with anything else? Sentence18: Okay. There are 10 trains matching your query. TR9605 departs at 14:01. Would you like to make a booking for that train or hear about other options? Sentence19: Yes please for 7 people at 14:15 on friday. Sentence20: I would be happy to assist you. Is there an area of town that interests you? Question: Who has spoken the sentence 10? (A) User (B) System
Output:
Answer: (A) User