You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: There is one that arrives by 11:08 and it departs at 10:40. Would you like to book that? Sentence2: No. That's all I needed to know, thank you. Sentence3: Yes. Six people at 14:00 on Monday. Sentence4: great, what is your destination? Sentence5: I have 6 trains available departures starting 05:40 to 10:40. What time would you like to leave? Sentence6: I'm trying to find a restaurant by the name of ali baba. Can you help me out? Sentence7: My destination is the Stansted Airport on Tuesday. Sentence8: Can you just give me the departure time of the one that gets me to Stansted a little before 11:15? Sentence9: Thank you. Yeah, I'm also looking for find a train out of Cambridge that will arrive by 11:15. Sentence10: Sure! Ali Baba is at 59 Hills Road City Centre. Would you like to book a table? Sentence11: Ok, your reservation is all set. They will hold the table for 15 minutes. Your reference number is UXY6QBZY . Is there anything else I can help you with today? Sentence12: You're welcome, have a great day! Question: Who has spoken the sentence 1? (A) User (B) System
A:
Answer: (B) System