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: I have the loch fyne. Would you like me to make a booking for you? Sentence2: Is the loch fyne in the same area as the Vue Cinema? Sentence3: Sure! Can I get the address? Sentence4: Thanks. I am also looking for a restaurant that serves seafood. I'd like it to be in the expensive price range. Sentence5: the booking was a success. your reference number is FR7FACKD . anything else i can help you with? Sentence6: Have a nice day. Sentence7: Help me find something fun to do in the centre. Sentence8: yes i will appreciate. Sentence9: The phone number for Vue Cinema is 08712240240. Can I help you with anything else? Sentence10: Yes please book that for 4 people at 20:00 on wednesday. Sentence11: Loch Fyne is located in the centre as well, yes. Would you like me to make a booking for you? Sentence12: The address is the grafton centre, east road, postcode cb11ps. Would you like the phone number? Sentence13: We have the vue cinema that's in that area. Would you like more information about that? Sentence14: No thanks. That looks like everything. Have a good day. Bye. Question: Who has spoken the sentence 5? (A) User (B) System
Answer: (B) System