Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: Sounds great. Can you please book that for me for Tuesday for 2 people, 2 nights please? Sentence2: There are 5 trains available what time would you like to leave by? Sentence3: Okay, TR0927 leaves at 13:29 and arrives at 14:07. Shall I book you a seat? Sentence4: No, I'll look it up later and do it myself. But could you tell me if there are any 4 star places to stay in the city centre? Sentence5: I was able to successfully book you, your reference number is D53TP7EU ., can I assist with anything else? Sentence6: What is your destination? And what day are you hoping to travel? Sentence7: I'd like to leave before 14:00 Sentence8: A train depart from Cambridge and arrive by 19:00 Sentence9: Nope, that's all I need today. Thanks! Sentence10: They both have free parking and wifi. How about the alexander bed and breakfast? It's on the cheaper side, 4 stars, and really quite lovely. Sentence11: Which ever one has free parking and wifi. Sentence12: You're welcome. Have a great day! Sentence13: There are two, a cheap guest house, and an expensive hotel. Any preference? Sentence14: I need to leave on Thursday and am heading to Bishops Stortford. Question: Who has spoken the sentence 11? (A) User (B) System
Output:
Answer: (B) System