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

Positive Example 1 -
Input: 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
Output: Answer: (A) User

Positive Example 2 -
Input: Sentence1: Guten Tag, I am staying overnight in Cambridge and need a place to sleep. I need free parking and internet. Sentence2: I have 4 different options for you. I have two cheaper guesthouses and two expensive hotels. Do you have a preference? Sentence3: No, but I'd really like to be on the south end of the city. Do any of those fit the bill? Sentence4: Sure. Does price matter? We can narrow it down and find exactly what you need. Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (B) System

Negative Example 1 -
Input: Sentence1: I am looking for a hotel named alyesbray lodge guest house. Sentence2: i have their info, what would you like to know? Sentence3: I would like to book a reservation for it. Can you help me with that? Sentence4: I sure can. First, I will need to know when you want your stay to begin and how many days you'll be staying. Also, how many people will be staying? Question: Who has spoken the sentence 1? (A) User (B) System
Output: Answer: (A) User

Negative Example 2 -
Input: Sentence1: Hi there! Can you give me some info on Cityroomz?. Sentence2: Cityroomz is located at Sleeperz Hotel, Station Road in the Centre area. It is a moderatley priced hotel with a 0 star rating. Would you like to book a room? Sentence3: Yes please. I need it for 7 people for 3 nights starting on tuesday. Sentence4: How many days would you like to book it for? Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (A) User

Now complete the following example -
Input: Sentence1: The price range at the Avalon is moderate. Do you have any more questions? Sentence2: Cool. Thanks I'm good now. Goodbye. Sentence3: First could you tell me the price range for the Avalon? Sentence4: I would really like a four star guesthouse in the north area, I don't need parking. Sentence5: I would prefer a guesthouse thats 4 star rated. Do either of those fit the bill? Sentence6: Yes both have free internet. Which one do you prefer? Sentence7: You have a wonderful day! Sentence8: Good evening. I'm kind of in a situation. The hotel I had planned to stay was overbooked and I need to find me a room pretty quickly. Can you help? Sentence9: Yes they does, but no free parking though. Sentence10: Not really. But it should be in the North. Sentence11: No, I'm afraid they're both two stars. Would you like to try one of them anyway? Sentence12: Yes, can you confirm if the Avalon has Internet, please? Sentence13: There are many hotels available, do you have any preferences to price or area? Sentence14: There are two hotels on the north end, the Ashley Hotel and the Lovell Lodge. Which would you like? Sentence15: Okay, I've found several place that meet those requirements. I suggest the Avalon. Would you like me to make a reservation for you? Sentence16: Do they have free wifi at either of them? Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System