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: Hello! I am looking for places to go in the centre of town. Can you help me with that?! Sentence2: I want to leave the Theater by 17:30 Sentence3: Can I get a taxi to take me between the two places? Sentence4: Thank you, goodbye. Sentence5: No problem. ADC Theatre's address is Park Street and its postcode is cb58as. Do you need anything else? Sentence6: The huntingdon marriot hotel sounds great. Could you please give me the postcode? Sentence7: The post code is pe296fl. Anything else I can help with? Sentence8: Yes, I just need to get the address and postcode for the Theatre. Sentence9: Absolutely. I have many options for you, including museums, architecture, concerthall and theatre. Do you have a preference? Sentence10: Yes, I'd like to stay at an expensive 4 star hotel with free parking and wifi. Sentence11: Okay great. Enjoy your time in Cambridge. Sentence12: Not at all. Sentence13: ADC Theatre is in the centre of town; will that work? Sentence14: Have a great day! Sentence15: Booking completed! Please look out for a Grey Volvo, their contact number is 07820757877. Is there anything else I can help with? Sentence16: I'd like to go to a theatre. Sentence17: What time would you like to go? Sentence18: I have 2 possible hotels. The huntingdon marriott hotel in the west and university arms hotel in centre. Would you like to book one of these? Question: Who has spoken the sentence 4? (A) User (B) System
Solution:
Answer: (A) User