You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: Thank you for using our services. Sentence2: Absolutely, their phone number is 01223358966. Sentence3: You've given me everything I need. Thanks. Goodbye. Sentence4: Am looking for the Parkside Police Station Sentence5: You're welcome. Is there anything else I can help you with today? Sentence6: Thanks for all of your help! Sentence7: You can contact them at Parkside, Cambridge, CB11JG Sentence8: Can I also get their phone number please? Question: Who has spoken the sentence 4? (A) User (B) System
Answer: (A) User

Sentence1: I'm departing from Norwich and want to arrive by 13:00. Sentence2: Yes, I will need a train to cambridge on thursday. Sentence3: You are booked for 7 people, 5 nights starting thursday. Your reference number is ZFREK5SQ . May I help you with anything else today? Sentence4: the Kirkwood House is in the north and it sports a four star rating. It has internet and parking and the price range is moderate. Would you like to book? Sentence5: You're welcome. Have a great time! Sentence6: The travel time of that train is 79 minutes. Sentence7: thanks for your help you have been great! Sentence8: That sounds perfect. Can you reserve it for seven people? Sentence9: Where will you be departing from? Sentence10: I'm looking for a particular hotel called the kirkwood house. Where is it, and what other information do you have about it? Sentence11: TR3078 departs at 11:16 and arrives by 12:35. Would you like a ticket? Sentence12: not right now, what's the travel time on that ride? Sentence13: Sure, I can book it for you. What day did you want to arrive and for how many days? Sentence14: 5 nights starting Thursday. Question: Who has spoken the sentence 4? (A) User (B) System
Answer: (A) User

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

Answer: (A) User