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: There are many 4 star hotels. What area and price would you like to be in? Sentence2: I've found the aylesbray lodge guest house. It has a moderate price and 4 stars. It offers free internet and parking. Shall I book it for you? Sentence3: Please help me find a four star hotel. Sentence4: I would like a cab leaving the hotel by 8:00 going to the restaurant, I need contact number and car type please. Sentence5: Somewhere South, mid price range and preferably a guesthouse type of hotel. Sentence6: Your red bmw was successful. Your contact number is 07998933072. Sentence7: The Bedouin serves African food, would you like me to book that for you? Sentence8: No, I just need the address and phone number. Sentence9: Thank you. I do not need any further help right now. Sentence10: Sorry, no venues found. Want to change the food type or price range? Sentence11: Okay, let's adjust the food type to african please Sentence12: Ok I will book it for you Sentence13: Is there any expensive Irish restaurants? Sentence14: They are at 100 Mill Road City Centre and can be reached at 01223367660. Is there anything else I can assist you with? Sentence15: Yes can you please book that. Sentence16: You're all set I've booked the Aylesbray lodge guesthouse for 3 nights 5 people starting Thursday. Your reference # is DTX3QITL . Is there anything else I can help you with? Sentence17: I need it for 3 nights starting Thursday. There will be 5 of us. Sentence18: Okay, it was my pleasure to assist you. goodbye Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User