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: Sure. What is the entrance fee and phone number? Sentence2: Not really, but I prefer guesthouse type. Sentence3: I need some places to go. Can you tell me about some concert halls in the south? Sentence4: Do you think the Aylesbray Lodge Guest House would suit you? It's also in the south. I can try to book you a room if you like. Sentence5: No thank you. That's everything I needed. Sentence6: Unfortunately I am not finding any concerthalls in the south. Is there a different type of attraction or a different area of town you would be interested in? Sentence7: I also need a place to stay. I am looking for a 4 star moderately priced place Sentence8: As long as they have decent internet I'm fine. Sentence9: I am also interested in your local museums. Are there any in the south? Sentence10: Yes, there is 1 museum in that location. It is called Byard Art Museum. Would you like more information? Sentence11: The Aylesbray Lodge Guest House does offer internet. Would you like to book a room? Sentence12: You're welcome. Have a nice day! Sentence13: I have several options for you. Would you like a particular area? Sentence14: Entrance is free, and the phone number is 01223464646. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User