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: Yes that sounds good may I have the phone number please? Sentence2: Not a problem! Can I help you with anything else today? Sentence3: How about your area preference and star rating of the hotel? Sentence4: Sure! The phone number is 01223333200. Anything else for you today? Sentence5: I prefer hotels. Moderately priced. Sentence6: No star preference, just as long as it's moderately priced. Thank you. Sentence7: Sure, do you have any area preferences? Sentence8: I would recommend the ashley hotel. Would you like more information? Sentence9: I am looking for colleges to visit while I am in town. Sentence10: Yeah. Moderate price range. Internet and parking are not a priority for me. Sentence11: There are 5 in town, but I recommend Clare College in the west. It's free to visit. Does that sound good? Sentence12: Not right now. Thank you for the information! Sentence13: Thanks for using our service. Have a nice night. Bye. Sentence14: The ashley hotel fits your needs and has 2 stars. Would you like a booking? Sentence15: I'd like one with free wifi, and could you give me the star rating? Sentence16: How about A and B Guesthouse? It is moderately priced. Sentence17: I am also looking for a place to stay. Could you help with that? Sentence18: Nope! That will do it, thanks! Question: Who has spoken the sentence 12? (A) User (B) System
Answer:
Answer: (A) User