Teacher:You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Teacher: Now, understand the problem? Solve this instance: Sentence1: It is an expensive restaurant located at 22 Chesterton Road Chesterton. What else would you like to know? Sentence2: Sure, I can help you with that. Was there a particular area of town you were looking for? Sentence3: Thank you for calling. Sentence4: Yes can you please book that for me? Sentence5: Great, thanks so much! Can you please book me a taxi from the restaurant to the attraction, leaving the restaurant by 15:30? Sentence6: What type of food would you like? Sentence7: I am looking for an Italian restaurant if available Sentence8: I need the name of the restaurant Sentence9: restaurant two two is a french restaurant in the north. Would you like me to book that for you? Sentence10: Just the postal code and phone number please. Sentence11: The riverboat georgina is in the north and great fun. The address is cambridge passenger cruisers, jubilee house, postcode cb43ax. Do you need more information? Sentence12: I am sorry but there are no restaurants matching your request. Would like to try another part of town? Sentence13: I have booked the taxi it is a red volvo with contact number 07626130412. Sentence14: No but I would love it if you could find me something fun to do in the same area, maybe something boat related. Sentence15: Yes when would you like to book? Sentence16: I'm sorry, I'm actually looking for a restaurant that serves cuban food in the North. Sentence17: how about a french restaurant? Sentence18: The postal code is cb43ax and the phone number is 01223351880. Would you like me to book the restaurant for you? Sentence19: Actually, I just need a little more information. I don't need to book right now. What is the price range for this restaurant? Sentence20: Have a nice day. Sentence21: I am looking for a restaurant. Sentence22: It's a french restaurant, Two Two, I believe. Question: Who has spoken the sentence 20? (A) User (B) System
Student:
Answer: (A) User