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: Thank you. Good bye. Sentence2: The Nirala is a great moderately priced Indian restaurant in the north part of town. They are located at 191 Histon Road Chesterton. Is there anything else I can do for you today? Sentence3: Thank you, goodbye. Sentence4: I want a moderately priced restaurant in the north part of town. What is the address? Question: Who has spoken the sentence 2? (A) User (B) System
Answer: (A) User