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

Let me give you an example: Sentence1:i need a place to dine in the center thats expensive Sentence2: I have several options for you; do you prefer African, Asian, or British food? Sentence3: Any sort of food would be fine, as long as it is a bit expensive. Could I get the phone number for your recommendation?Question: Who has spoken the sentence 2? (A) User (B) System
The answer to this example can be: Answer: (A) User
Here is why: The sentence 1 is said by a user because the intent of it says that the information has to be gathered from the system

OK. solve this:
Sentence1: I'm sorry, we were not able to book a room at that hotel. Would you like us to try booking another hotel? Sentence2: I need a hotel in the east. Sentence3: Okay, you're booked at Avalon with reference number 7U6TURWS . May I help with anything else? Sentence4: Thank you for calling. Enjoy your stay. Sentence5: I have 3 hotels in the city that meet your request. Are you looking for a certain area of the city? Sentence6: Yes that will be fine. Book the room for 8 and for 5 nights on wednesday. Sentence7: I have A and B Guest House in the east. Does that sound good? I can help you book a room there if you'd like. Sentence8: That was all that I needed, thank you! Sentence9: Okay sure. Try another hotel in the same price range. Sentence10: I'm looking for a hotel that includes free wifi, but it doesn't need to have free parking. Question: Who has spoken the sentence 5? (A) User (B) System
Answer:
Answer: (B) System