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

Sentence1: You're welcome. Have a good day! Sentence2: Yes, what is their address and phone number? Sentence3: thank you good bye Sentence4: I'm looking for a japanese restaurant in town. Sentence5: its address is 36 Saint Andrews Street and phone number is 01223 462354 Sentence6: Wagamama is a japanese restaurant in the centre of town. Would you like their location? Question: Who has spoken the sentence 1? (A) User (B) System
Answer: (B) System