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: Glad I could help. Let us know if you need help in the future. Have a great day!! Sentence2: OK, if you would like me to book a room, I'll need the number of people, the number of nights you're staying, and your arrival day. Sentence3: I want a guesthouse, but don't really care what area it is in. Sentence4: No, thank you for your help. Sentence5: I sure will and you have a great day too. Sentence6: I guess that would be okay Sentence7: I don't need you to book it. Can you just provide me with the address and area. Sentence8: Glad to help! Have a lovely day. Sentence9: I am looking for a cheap hotel with free wifi Sentence10: May I suggest the 4 star, cheap range guesthouse called Finches Bed and Breakfast at 144 Thornton Road, CB30ND. May I make a reservation? Sentence11: Okay, there are 9 cheap guesthouses. Do you prefer it to have free parking? Sentence12: Finches is in the west, at 144 thornton road. Can I help with anything else today? Sentence13: Don't particularly care about parking but if you can narrow it down to just the 4 star ones I would appreciate it. Sentence14: Sure, we have many. Do you have a specific area you want to stay in? Question: Who has spoken the sentence 7? (A) User (B) System
Output:
Answer: (B) System