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: Thanh Binh serves Vietnamese food. Is there anything else I can help you with? Sentence2: Is there any restaurants that serve Vietnamese food? Sentence3: What's the address? Sentence4: I'd like to find a restaurant that serves swiss food. Sentence5: thanh binh's address is 17 Magdalene Street City Centre Sentence6: Im sorry there are no restaurants offering Swiss food in your area. Sentence7: Thank you, goodbye. Sentence8: Thank you, goodbye. Question: Who has spoken the sentence 6? (A) User (B) System
Student:
Answer: (A) User