Detailed Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: No, that would be all. Thank you. Have a good day. Sentence2: Can you give me the phone number for Churchill? Sentence3: Of course! Ugly Duckling is an expensive Chinese restaurant in town center. Would you like a booking there? Sentence4: Certainly, churchill college the phone number is 01223336233. What else can I do for you today? Sentence5: Can you tell me what kind of food the Ugly Duckling offers and where it is located? I also need their phone number. Thank you. Sentence6: Thank you for all your help today. Sentence7: How about a college then? Sentence8: I am also looking for information about a restaurant called ugly duckling. Sentence9: The Ugly Duckling offers Chinese food. The address is 12 St. Johns Street City Centre. Their phone number is unavailable. Sentence10: There are 5 college's in the west area. There is Churchill, Clare, Clare Hall, Magdalene and Queens. Would you like me to book one today? Sentence11: Hi, I am looking for places in west Cambridge that feature architecture. Sentence12: I am sorry, I am unable to locate an attraction in your desired location? Sentence13: Thank you. Enjoy your stay. Sentence14: Is there anything else that I can assist you with today? Question: Who has spoken the sentence 6? (A) User (B) System
A:
Answer: (A) User