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: Your booking at the Alexander Bed and Breakfast for a party of 4 for Saturday for 6 days 5 nights was successful. Your Reference number is: X8LLFDAV . Anything else today? Sentence2: Really? Can you try again? A 4 star accommodation (type doesnt matter) that is cheap and in the centre with parking Sentence3: I'd love a recommendation. I'm looking to book a table for 4 at 17:30 on Saturday. Sentence4: Okay. I'll need that booked for 4 people and 5 nights beginning saturday. Please send a reference number. Sentence5: I am looking for some Italian food today. Sentence6: Yes, but the place will also need to have 4 stars and free parking. Sentence7: There are 9 Italian restaurants located in Centre, would you like a recommendation or do you have a particular price point in mind? Sentence8: I am sorry but I did not find one with your request, with free parking and 4 stars, can I help you find one in a different area? Sentence9: I have found one result, a guesthouse. It is alexander bed and breakfast. Sentence10: Thank you for using our services. Sentence11: Thanks. can you help me with a cheap place to stay also in the centre of town? Sentence12: Booking was successful. The table will be reserved for 15 minutes at the stazione restaurant and coffee bar. Address is Market Hill City Centre Reference number is : OHN98K8U . Sentence13: Thank you, but that is all I need for now. Sentence14: I have 2 cheap hotels that are cheap in the centre. Would you like to book one of them? Sentence15: Are any located in the Centre? Sentence16: We have several Italian restaurants in town! Do you have a certain area or price range in mind? Question: Who has spoken the sentence 6? (A) User (B) System
Solution:
Answer: (A) User