You will be given a definition of a task first, then some input 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: Price is not of any concern, just so it has a 4 star rating. Sentence2: I have successfully booked you for avalon. Reference number is RI8WLX7E . Do you need anything else? Sentence3: Oh, I think I forgot to mention that it needs to be a 4 star guesthouse. I want to book Saturday for 7 people 2 nights. Sentence4: What dates would you like to stay? Sentence5: All the 8 hotels are 4 star hotels. I recommend the Avalon or the Archway House. Should I book one of those for you and your party? Sentence6: I sure hope so. I'd like to find a place to stay, with four stars, in the north. Sentence7: Yes, please book a reservation. Sentence8: I have about 8 options for you. They are all guesthouses. Do you have a preferred price range? Question: Who has spoken the sentence 2? (A) User (B) System
Output:
Answer: (A) User