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: Thank you for calling and if you need anything else don't hesitate to call again. Enjoy your dinner and hotel stay! Sentence2: Yes book it for Saturday. 6 people, 5 nights. Sentence3: the cambridge belfry is in the west. It's a cheap 4 star hotel. Are you interested in booking a night? Sentence4: Yes, it's a luxurious place on the west side. Would you like the number, or a reservation? Sentence5: I was hoping to find a hotel that is 4 star. Sentence6: I'm looking for a place called maharajah tandoori restaurant. Do you know it? It's a restaurant. Sentence7: I don't care, just as long as it's in the moderate price range. Sentence8: Yes, I would like to make a reservation for 6 people at 19:30 this Saturday. Could I also get the reference number? Sentence9: You have 11 options. They are all guesthouses. Would you like free parking or internet at your location? Sentence10: Yes! Your all set confirmation number is QX0059LN, anything else today? Sentence11: That is all I need. Sentence12: Oh, I really prefer a hotel. Maybe you could find someplace that is cheap instead? Sentence13: You are all set, the reference number is OEX7Z2S0, can I assist with anything else today? Sentence14: What part of town are you looking at staying in? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System