Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: The allenbell is a 4-star guesthouse in the east. Would you like to make a booking? Sentence2: Thank you for the reference number YU3MOAHH. Goodbye. Sentence3: I'm very sorry. That booking was unavailable. Would you like to find another hotel? Sentence4: It includes free parking. Would you like to book a room at this hotel? Sentence5: Yes, please book it for 1 person and 3 nights starting from sunday. Sentence6: does it include free parking? Sentence7: Sure. Any guesthouse in the same price range would be fine. Sentence8: I would like a guesthouse, four star. Sentence9: I have booked you a room at the Autumn House. Their address is 710 newmarket road. Phone number is 01223575122. Reference number is : YU3MOAHH . Sentence10: Let us know if you need further help. Question: Who has spoken the sentence 2? (A) User (B) System
Output:
Answer: (A) User