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: I need a place to stay that is cheap. Sentence2: Nope, that's it. Thanks! Sentence3: I don't care what part of town it is in. Sentence4: What is the reference number? Sentence5: Sorry there are no hotels that meet that criteria. Can I try a different area for you? Sentence6: Reference number is : YBUKJ2IZ . Would you like restaurant reservations or information on area attractions? Sentence7: I found a 4 star hotel in the east area that is cheap. It's called the allenbell, would you like me to book it for you? Sentence8: Your booking was successful. Is there anything else I can help you with? Sentence9: Glad I could help. Thank you Sentence10: I actually want a 0 star location and with free parking too Sentence11: Sure. There will be 5 people for 5 nights and we will be arriving on Wednesday. Sentence12: The El Shaddai is a guesthouse in the centre of town. Would you like me to book that for you? Question: Who has spoken the sentence 1? (A) User (B) System
Output:
Answer: (B) System