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: anytime after 19:00 Sentence2: Yes I am looking for a attraction called holy trinity church. Sentence3: Do you have the address of holy trinity church? Sentence4: I would like to leave on Saturday. Sentence5: Yes. I would like to book for 3 people and will need a reference number. Sentence6: That's all I need. Thank you. Sentence7: Holy Trinity Church is located on Market St in postcode cb23nz. It's free to get in. Did you have any further questions? Sentence8: Thank you. Can you help me find a train going to Leicester? Sentence9: I have a train that leaves at 19:21. What day would you like to travel? Sentence10: Yes, when would you like to leave? Sentence11: I booked you 3 seats on TR4708 leaving Cambridge on Saturday at 20:21, the total fee is 90.72 GBP and your reference number is FVMA8AAO . Sentence12: TR4708 departs cambridge at 19:21 and arrives at 21:06. Can I book that for you? Sentence13: I'm glad that I can be of help please have a great trip. Sentence14: Yes it's on Market street. Question: Who has spoken the sentence 8? (A) User (B) System
Output:
Answer: (A) User