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: Contact us anytime. Good bye. Sentence2: Booking was successful. Your reference number is ZP33SYC4 . Will that be all? Sentence3: The phone number is 01223324600. Perhaps they can inform you how much the entrance fee is. Sentence4: it is an expensive hotel in the centre. can i give you their contact? Sentence5: Ok if you read carefully, I also asked for the phone number please. Sentence6: The entrance fee is unknown. Sentence7: There is one nightclub, The Place, would you like their information? Sentence8: Actually, I am ready to book. Can you book the Gonville Hotel for 3 people for 5 nights, starting Thursday? Sentence9: i am looking for the gonville hotel Sentence10: Please provide the entrance fee and phone number for me Sentence11: I'm actually looking for something in the South. If there are no boat attractions there can you find me a nightclub? Sentence12: Thank you goodbye Sentence13: I would also like to find a boat attraction. Sentence14: There are four. One in the east, one in the north, and two in the centre. Which would you prefer? Question: Who has spoken the sentence 3? (A) User (B) System
Answer:
Answer: (B) System