Q: 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 I can help you with? Sentence2: Yes, I also need a train to Cambridge from Ely. Sentence3: Train TR1549 departs at 17:50 and arrives in Ely at 18:07. Sentence4: I've heard good things about the Acorn guest house. Could you find it for me? Sentence5: Excellent, that's all the information I need right now. Thank you! Sentence6: Have a great day. Sentence7: Wednesday and needs to arrive by 18:15 that day. Sentence8: The Acorn Guest House is a 4 star guesthouse in the north with free Wifi and parking. The address is 154 Chesterton Road and the phone number is 01223353888. Sentence9: There are 7 trains, TR1549 arrives at 18:07 if you'd like to book that just let me know. Sentence10: Thank you very much! Sentence11: I don't need to book right now. What time does this train depart from Ely? Sentence12: Sure what day will you be traveling? Question: Who has spoken the sentence 9? (A) User (B) System
A:
Answer: (B) System