Q: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Sentence1: nope that is all thank you so much you are amazing and awesome and cool and nice Sentence2: I want to leave after 02:00 Sentence3: Thank you very much. Sentence4: Hi! I would like to book a taxi that will take me to Pizza Hut Cherry Hinton. I will be departing from Parkside Pools. Sentence5: We are happy to help. Do you require any further assistance? Sentence6: What time would you like to leave? Sentence7: I can book a Black Ford for you. The contact number of the company is 07708238835. Can I help with anything else? Sentence8: Thank you for the kind words. You have a great day. Question: Who has spoken the sentence 5? (A) User (B) System
A:
Answer: (B) System