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

Sentence1: Can I get the address, phone number, and postcode? Sentence2: Their phone number is 01223 566388. Their address is 451 Newmarket Road Fen Ditton, postcode C.B 5, 8 J.J. Sentence3: Thank you. Goodbye. Sentence4: How about curry prince, they are in the moderate price range in the east part of town Sentence5: I'm looking for a restaurant in the moderate price range in the east part of town Sentence6: You're welcome. Thank you for calling. Goodbye. Question: Who has spoken the sentence 1? (A) User (B) System
Answer: (B) System