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: There are no such restaurants. Would you like to make another query? Sentence2: Thank you good bye. Sentence3: No Thank You Sentence4: We have a couple of Italian restaurants in the west. Would you like information on those? Sentence5: Thank you. Good bye. Sentence6: I am looking for a restaurant in the west part of town serving corsica food. Question: Who has spoken the sentence 2? (A) User (B) System
Output:
Answer: (A) User