You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Example: 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
Example solution: Answer: (A) User
Example explanation: The sentence 1 is said by a user because the intent of it says that the information has to be gathered from the system

Problem: Sentence1: i need to get to kings lynn. i want to leave after 20:45 Sentence2: Thanks for the information. I believe I have everything I need. Sentence3: That sounds good. What is the arrival time and train ID? I'll also need the price of the ticket. Sentence4: thank you for helping Sentence5: Okay, your booking was successful. The reference number is : BBO5NVNF . Is there anything else I can help you with? Sentence6: There is a train that leaves at 21:00. Sentence7: Okay glad I could help. Sentence8: Yes, I need a train on Tuesday from Cambridge. Sentence9: Either would work for me. Just a decent room is all I really need. I'm going to be at a business conference in the north so maybe in that area. Sentence10: You are so welcome. Is there anything else I may assist you with today? Sentence11: Did you want a guesthouse or a hotel. Maybe you need a certain area of town? Sentence12: I'm looking for a place to stay that is moderately priced and includes free wifi. Sentence13: Yes please. I'll need a room for 7 people and 3 nights starting on Monday. Sentence14: I think the ashley Hotel best suites your needs, would you like me to book a room? Sentence15: TR8387 Will arrive at 21:58. 9.80 pounds. Sentence16: Is there a specific time and destination you are traveling to? Question: Who has spoken the sentence 7? (A) User (B) System
Solution: Answer: (B) System