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: Yes please. Book a table for my party of 8 for 12:45 on Monday. Sentence2: I have made your reservation, with reference #D8E6CV1X . Can I help you with anything else today? Sentence3: I want to arrive in time for my lunch reservation. Sentence4: The good luck Chinese takeaway. Sentence5: Taxi is ready, look for a black lexus, they can be reached at 07505999310, any further questions? Sentence6: That is one of my favorite guesthouses. Do you need a reservation there? Sentence7: thank you for all the information. goodbye Sentence8: No, that's all I needed. Thank you for your help, it's much appreciated! Sentence9: What time would you like to travel? Sentence10: Yes, I am also looking for a hotel named kirkwood house. Sentence11: I also need a taxi between the two places. Sentence12: Yes please for 5 people for 5 nights from Monday please. Sentence13: That's on 82 Cherry Hinton Road. If you need to contact them for directions, their number is 01223244149. Can I help with anything else? Sentence14: Do you know the name of it? I can try and find it for you. Sentence15: I can't find a restaurant I am looking for. Sentence16: Booking was successful. Your reference number is K7VLK45Q . Will that be all? Question: Who has spoken the sentence 12? (A) User (B) System
Answer: (A) User