You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Let me give you an 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
The answer to this example can be: Answer: (A) User
Here is 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

OK. solve this:
Sentence1: I have four different swimming pools I can recommend. First, can you specify if you prefer the centre, east, or north area? Sentence2: I wish to go to a swimmingpool in Cambridge. Sentence3: There are 8 trains that would work on Wednesday. Do you have a departure time in mind? You could leave london as early as 07:39 or as late as 17:39. Sentence4: No, that will be everything. Goodbye. Sentence5: The address is gonville place and their phone number is 01223446100 Sentence6: The train booking is confirmed, number KJ1FLZL5 is your confirmation number. The fee is 16.6 GBP. Anything else I can help you with? Sentence7: Thank you for contacting Cambridge TownInfo Centre! Have a great day! Sentence8: Thanks. I also need to check on trains. I need to travel on Wednesday. Sentence9: I don't care about the departure time so please give me the ID and price of any one of those trains. Sentence10: Okay, the trainID is TR7020 and the price is 16.60 pounds. Sentence11: I need to leave london liverpool street and be in cambridge by 21:00. Sentence12: There are many trains fitting your criteria. Can you give me departure site, destination, and time preferences? Sentence13: I would like to book that train. Thank You Sentence14: Can you tell me the address and phone number for the one in the center of town? Question: Who has spoken the sentence 9? (A) User (B) System
Answer:
Answer: (B) System