You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1:i need a place to dine in the center thats expensive Sentence2: I have several options for you; do you prefer African, Asian, or British food? Sentence3: Any sort of food would be fine, as long as it is a bit expensive. Could I get the phone number for your recommendation?Question: Who has spoken the sentence 2? (A) User (B) System
Solution: Answer: (A) User
Why? The sentence 1 is said by a user because the intent of it says that the information has to be gathered from the system

New input: Sentence1: How about Archway House in the north? It has free parking and free Internet. It gets 4 stars. Would you like to book this one? Sentence2: The closest I have to that is a train arriving at 15:06 and takes 105 minutes to arrive. The train ID for this journey is TR1160. Would you like a reservation? Sentence3: Yes please. Book it for 4 nights for 6 people. We'd love to check in on Sunday Sentence4: I'm trying to narrow 11 choices down. Would you want free parking or free internet? Sentence5: free parking, please. Sentence6: Thank you. That was all I needed. Goodbye. Sentence7: You have several choices. Trains leave Cambridge at 5:21, 6:21, 7:21, 8:21, and 9:21. The 9:21 arrives at 11:06. Shall I book one of these ? Sentence8: Leaving from Cambridge this coming Thursday. Sentence9: Great. Your booking was successful and your reference number is PA8I7W04 . Sentence10: Hi, I need to locate a train to Leicester that will arrive by 16:45. Sentence11: No, I don't need a reservation. Sentence12: Okay we can do that. Where are you departing from? Sentence13: Yes, I was also looking for a place to stay somewhere in the north. Sentence14: Is there anything that I may help you with today? Sentence15: OK I need one that arrives at 15:45 and I will need the travel time and the train ID. Sentence16: In the moderate price range, please. Sentence17: sure, what price range? Sentence18: Have a nice day. Question: Who has spoken the sentence 2? (A) User (B) System
Solution:
Answer: (A) User