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: Great! Thanks for your help, that's all I need. Sentence2: Great! Have a wonderful day! Sentence3: Booking was successful for that time! Your table will be reserved for 15 minutes. Here is your reference number: 6BCI3XF8 . Sentence4: That sounds right. Could you reserve a table for 6 at 18:00 on Friday? Sentence5: I apologize but the booking was unsuccessful. Can we try another day or time? Sentence6: India House is a restaurant located at 31 Newnham Road Newnham on the west side of town. Is this the place you are referring to? Sentence7: Can you try for 17:00 instead? Sentence8: I am looking for some info on India House Question: Who has spoken the sentence 4? (A) User (B) System
Output:
Answer: (A) User