Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: I won't need to book a table but thank you. For the train I need to leave monday and am headed towards peterborough. Sentence2: I'll need to know how many will be dining, the day and the time you want to dine to book the restaurant. There are several trains leaving cambridge after 13:15. Sentence3: How many tickets do you need? Sentence4: Train TR5901 has a travel time of 50 minutes and has a price of 16.50 pounds Sentence5: Thank you! What part of town is it in? Sentence6: yes and also looking for a train. The train should leave after 13:15 and should depart from cambridge Sentence7: First can I have the price and what the travel time is? Sentence8: They're in the centre of town. They are an expensive restaurant located at 24 Green Street City Centre. Would you like me to book a table for you? Sentence9: I'm not sure how many yet. Thank you for all the information. I'll get back to you. Goodbye. Sentence10: What can you tell me about the bangkok city restaurant? Sentence11: Can you book it for me? Sentence12: it is okey, thanks and good bye too Sentence13: sure their phone number is 01223354382. anything else i can help you with? Sentence14: Okay, I have the TR5901 that leaves at 13:34 and arrives at 14:24 Will that work for you? Question: Who has spoken the sentence 12? (A) User (B) System
Output:
Answer: (A) User