Given the task definition and input, reply with output. You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: I can help you with that. What price range are you looking for? Sentence2: Wonderful, I can help you. Could you help me by telling me where you're departing from, and where you'd like to arrive? Sentence3: Yes I would also like to find a place to dine that serves italian food and should be in the centre of town. Sentence4: I am leaving birmingham new street going to cambridge. I need a ticket that leaves on saturday and will get me there by 12:15, can you help? Sentence5: You are very welcome! Thank you for reaching out to the Cambridge TownInfo centre. I hope you enjoy your stay! Sentence6: I need a train to arrive by 12:15 on saturday. Can you help me? Sentence7: yes, that's fine. Can I have the address please? Sentence8: I'm not ready to book, but appreciate the information. Sentence9: The train closest to your requested arrival time is the TR4382. It departs Birmingham New Street at 08:40 and arrives in Cambridge at 11:23. Shall I book you a ticket? Sentence10: Yes, the address is Market Hill City Centre. Sentence11: It should be in the expensive price range. Sentence12: Perfect, that is all I need for right now. Thank you for all of your help! Goodbye. Sentence13: No problem at all! Is there anything more I can help you with today? Sentence14: There are 4 in the area I recommend Stazione Restaurant and coffee bar. Question: Who has spoken the sentence 13? (A) User (B) System
Answer: (B) System