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

Sentence1: Thank you and have a great day. Sentence2: I've been injured. Where is the closest hospital? Sentence3: No. What is the complete address? Sentence4: That is the address we have available to us. Is there anything else we can help with? Sentence5: The closest hospital is the Addenbrookes Hospital located at Hills Rd, Cambridge, postcode CB20QQ, do you need their phone number? Sentence6: No. That is all I need. Thank you. Question: Who has spoken the sentence 3? (A) User (B) System
Answer: (B) System