Given the task definition, example input & output, solve the new input case.
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
Output: Answer: (A) User
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 case for you: Sentence1: I need you to check again. Train from Ely to Cambridge. Sentence2: I'd like to leave Cambridge on Wednesday, please. Sentence3: Sounds great, what is the price and arrival time? Sentence4: Thank you for contacting us and have a nice day. Sentence5: What day would you like to travel? Sentence6: Yes, there will be 4 of us on Wednesday at 11:00. Please book. Sentence7: I recommend cotto. It has British cuisine. Would you like reservations? Sentence8: OK, the earliest train after 08:15 is the 09:50 to Cambridge. It's a quick, 17-minute trip. Would you like to book seats? Sentence9: Awesome, thanks for all your help! Good day Sentence10: I have made those reservations and your reference number is KOSM5AJ9 . Sentence11: Type of food doesn't matter, what would you prefer? Sentence12: There are no trains on Wednesday. Sentence13: Thanks! I'm also looking for someplace to eat in the center of town. Something in the moderate price range. Sentence14: I need a train to Ely after 08:15, please. Sentence15: What type of food would you like to eat? Sentence16: It will cost you 4.40 pounds and it arrives by 10:07. Question: Who has spoken the sentence 6? (A) User (B) System
Output:
Answer: (A) User