You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: I am looking for a hotel near the mall. The hotel should has free indoor parking, even it doesn't include internet. Sentence2: Both the Gonville and the University Arms have free wifi and free parking. Would you like to make a reservation at one of those? Sentence3: Sure, you're all set. Your reference number is H8OMGIP5 . May I help with anything else? Sentence4: Ok. There are several hotels with parking available. What specific area of town are you wanting? Sentence5: Do either of those hotels have free wifi? Sentence6: I want to be in the area with the mall. Which hotel is the closest to the mall? Sentence7: That would be in the centre of town. I have two options for you. Gonville Hotel and University Arms Hotel. Would you like more info on one of those? Sentence8: No, I think that covers it, thank you very much. Sentence9: You are welcome. Have a good day. Sentence10: I will try booking at the Gonville for 3 people and 4 nights starting from Sunday. Question: Who has spoken the sentence 5? (A) User (B) System
Answer: (B) System