Given the task definition and input, reply with output. You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: Okay, how about midsummer house restaurant located at midsummer common? Sentence2: What about an expensive restaurant in the centre? Sentence3: Thank you, I'm also looking for a hotel with free parking and wifi. Can you find me one? Sentence4: Sure i will find you one thanks i lot and welcome again Sentence5: I want to find out if there are any places to dine that serve Australian food in the centre. Sentence6: I'd be interested in any serving British food. Sentence7: Sounds great. Please book me a table for Wednesday at 16:00 for 5 people. Sentence8: Booking was successful. The table will be reserved for 15 minutes. Reference number is : W3Y6OCL8 . Sentence9: Unfortunately, there are not. Do you want me to run another search? Sentence10: Sure I have many types of cuisine to choose from: African, French, Asian Oriental, British, European..any preference? Question: Who has spoken the sentence 5? (A) User (B) System
Answer: (B) System