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 am also looking for a restaurant in the centre in the expensive price range. Sentence2: No, problem, I just need to know what time you wish to get there and where you'll be arriving from. Sentence3: Curry Garden is a nice indian restaurant in the Centre. Should I book you any tables? Sentence4: Okay, you'll be picked by a black lexus. Their contact number is 07229815705 Sentence5: I just need the area it is located in and the phone number please. Sentence6: it is a college situated in the west, do you need the address? Sentence7: Can you also book a cab to get me to the restaurant in time for my reservation? Sentence8: Can you provide information about Clare Hall? Sentence9: I have many restaurants. Is there a type of food you would enjoy? Sentence10: You are very welcome. Goodbye. Sentence11: okay, how about indian food. Sentence12: unfortunately, i do not. are there other cuisines that you like? Sentence13: That sounds nice, can I get their phone number please? Sentence14: Sure, the phone number is 01223302330. Is there something else I can help you with today? Sentence15: I really love mexican. Do you have one that serves that? Sentence16: I want to leave the restaurant by 11:45. Going to Clare Hall. Sentence17: Wonderful, you made me excited for this trip now can't wait!, That is everything, thank you. Sentence18: It's located in the west and the phone number is 01223332360. Is there anything else I can help you with today? Question: Who has spoken the sentence 3? (A) User (B) System
Answer:
Answer: (B) System