Detailed Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Problem:Sentence1: The Ugly Duckling's phone number is not available but their postcode is cb21tw. Where will you be departing from? Sentence2: No, but if you could give me the price of a ticket? Sentence3: My favorite is the Ugly Duckling, located at 12 St. Johns Street City Centre. They don't seem to have a phone number, so would you like a different restaurant? Sentence4: I am not familiar with Cherry Hinton Road. Is that in the Centre of town? Sentence5: There are 31 available trains, do you have a more specific time in mind to help narrow them down? Sentence6: There are 31 trains available, what departure time would be best for you? Sentence7: We have 4 expensive chinese restauarants in the city centre. Would you like reservations? Sentence8: I will be departing from Peterborough after 8:30. Sentence9: Great. That's all the information I need now. Thanks! Sentence10: The first train that leaves after 8:30 would be nice. Sentence11: No thank you, can you just give me the address and phone number for one of them? Sentence12: I need to be in Cambridge on Saturday. Sentence13: We have 57 options available, do you have a preference on cuisine or location? Sentence14: Yes, I would like some Chinese food, please. Sentence15: What is your destination? Sentence16: I would like to find an expensive place to eat please. Sentence17: You're welcome, goodbye! Sentence18: Yes please. I would like something in the expensive price range. Sentence19: Ok. That train is TR1616 which leaves at 08:48. Would you like for me to book your seats? Sentence20: It is 13.20 pounds. Sentence21: No, actually they are located in the south. Did you want me to check for what is available in the centre instead? Sentence22: There are 9 options. The Good Luck Chinese Food Takeaway is located at 82 Cherry Hinton Road, Cherry Hinton. Would you like to reserve a table? Sentence23: Yes please give me the post code and phone number for one of the restaurants that has them listed. I am also looking for a train. Sentence24: Any time after 08:30 would work. Question: Who has spoken the sentence 18? (A) User (B) System
Solution:
Answer: (A) User