You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: Is there anything else? Sentence2: Nandos city centre is in the centre part of town. Their phone number is 01223 327908 Sentence3: Thank you. Goodbye. Sentence4: I need some portuguese food! I need a restaurant in any area. Please give me a phone number. Sentence5: Nandos is located in the south area. Address is Cambridge Leisure Park Clifton Way and phone number is 01223 327908. Sentence6: Thank you, goodbye. Question: Who has spoken the sentence 1? (A) User (B) System
Answer: (B) System