You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

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
Solution: Answer: (A) User
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

New input: Sentence1: Are there any British restaurants in that area? Sentence2: Thank you for your help. Sentence3: Are you interested in a certain cuisine or price range? Sentence4: No, I'll be heading from the restaurant to the hotel. Sentence5: Graffiti's phone number is 01223277977. It's in the expensive price range. Do you want me to make a booking? Sentence6: Okay, I will do that. Will you be picked up at the hotel? Sentence7: Can I help with anything else? Sentence8: Sure. Cityroomz is located in the centre at sleeperz hotel, station road. Sentence9: That sounds great, do you have a number for Graffiti? What's the price range? Sentence10: phone number and postcode please and thank you Sentence11: Okay. Well, I've heard great things about Graffiti. How about that? Sentence12: yellow honda Contact number : 07467571080 Is there anything else I can assist you with? Sentence13: No but I do need a taxi and need it at restaurant by 03:15. Sentence14: You are welcome enjoy. Sentence15: I do not have a preference on price range. Sentence16: Hello! I'm looking for the hotel called Cityroomz. Can you give me some information, please? Sentence17: Thats all and thank you. Sentence18: There are three! Do you prefer moderately priced or expensive? Sentence19: Yes, I'd like to find a place to eat in the west area. Sentence20: The phone number is 01223304050 and the postcode is cb12tz. Question: Who has spoken the sentence 11? (A) User (B) System
Solution:
Answer: (B) System