Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: There are many options available. Would you like to narrow it down by departure time or arrival time? Sentence2: Their postcode is cb12lf and their phone is 01223474144. Can I help you with anything else today? Sentence3: I am also looking for a train from Cambridge to Peterborough on Wednesday. Can you help with that? Sentence4: What would you recommend? I just need to stay in the centre and will need to call them later to ask some questions. Sentence5: thanks for serving me! Sentence6: Sure, what type of place are you interested in? Sentence7: I'd like to leave after 21:45, if possible. I won't need to book. I'll just need the arrival time, please? Sentence8: YEah, anytime. It was my pleasure. Sentence9: There are about 44 attraction in the center but if i may know what interests you i can recommend one to you. Sentence10: There is a great concert hall in the centre called Man on the Moon. It's one of the best for visitors. They are located at 2 Norfolk Street. Sentence11: Whatever is most popular, this is my first time to cambridge and I have no idea. Sentence12: thank you once again Sentence13: Sure, the TR8574 leaves at 22:06 and arrives at 22:56. Sentence14: I'm sorry about that, I forgot to hang up. Good bye. Sentence15: Thank you for the information. Do you happen to have the postcode and phone number for the Man on the Moon? Sentence16: I would like to find places to go to in the centre of town. Question: Who has spoken the sentence 2? (A) User (B) System
Output:
Answer: (A) User