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: What time did you want to leave london liverpool or arrive in cambridge? Sentence2: It has been a pleasure, have a great day. Goodbye Sentence3: Kymmoy looks like a good choice. Sentence4: Please reserve a restaurant for five people at 19:15 on Monday Sentence5: Booking was successful. The table will be reserved for 15 minutes. Reference number is : DWLEYVAV . is there anything else i could help you with? Sentence6: Not right now. However, I do need to find an expensive restaurant to dine at in the centre of town. Any suggestions? Sentence7: The arrival time is by 15:07 and it will take 88 minutes. Can I book that for you? Sentence8: Hi, I need a train out of london liverpool street on Monday Sentence9: TR6226 will leave at 13:39, would that work for you? Sentence10: Sure. Can I get the arrival time and how long it will take? Sentence11: That is all I need. Sentence12: i want to leave after 12:15 Question: Who has spoken the sentence 7? (A) User (B) System
Solution: Answer: (B) System