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: Could you please recommend one and give me the phone number? Sentence2: city centre north b and b is a zero star guesthouse. Would you like me to book a room for you? Sentence3: There are 4 theater's in the centre area and one in the south. Would you like more information on any of them? Sentence4: I recommend the mumford theatre in the centre. Their phone number is 08451962320. Is there anything else I can help you with? Sentence5: A shuttle? We don't provide those, we do have trains however. Sentence6: No let's try looking in the north instead Sentence7: Yes, please 5 people for 5 nights on Saturday. Sentence8: Alright, glad to be of service. Bye! Sentence9: Just a taxi leaving the theatre by 10:45 and going to the hotel. Sentence10: Your ride will be there at 10:45. They will be in a black Audi and their number is 07262280207. Sentence11: Are there any theatres nearby? Sentence12: I'm sorry but there are no guesthouses in the south with zero stars and free parking. There is a 3-star guesthouse called bridge guest house. Are you interested? Sentence13: I've already booked you a taxi - the information is above. Is there anything else I can help you with today? Sentence14: Have you booked, 9L1SUXC3 is your confirmation. Anything else? Sentence15: I'm guessing that's in the centre area of town? I actually need a guesthouse in the south with free parking. Sentence16: Nope, that's all I needed. Thanks, and goodbye! Sentence17: City centre north b and b is in the north area and has free parking. Would like reservations? Sentence18: I also need to find a guesthouse to say in. Preferably a 0 star one. Sentence19: I mean I would love to have a taxi Sentence20: Can I get a shuttle back to the airport? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System