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: I would like to be in the centre. Sentence2: Can you help me find a really nice and expensive chinese place in town? Sentence3: The phone number for All Saints Church is 01223452587. Can I help you with anything else? Sentence4: How about all saints church? It has free admission. Sentence5: I'd like to go between All Saints Church and Tang Chinese by 2:30. Sentence6: Sure. The postcode is cb58bs. Can I help you with anything else? Sentence7: Booking completed! Booked car type : red skoda Contact number : 07139106461 Sentence8: thanks thatnis it for today Sentence9: Can you tell me their postcode as well? Sentence10: How about tang chinese? They are located at Napier Street City Centre. Sentence11: Any luck with the taxi yet? Sentence12: Sounds interesting. What is their phone number? Sentence13: i want information about attractions in the centre Sentence14: I can help you with that. Where would you like the taxi to pick you up? Sentence15: Okay, no problem! I hope you have a great visit! Sentence16: Can you tell me their phone number? Sentence17: Let me find a taxi for you. Sentence18: I also want to book a taxi to commute between the two places. Sentence19: Okay! What area of town would you like to dine in? Sentence20: Sure thing, here you go 01223357187 Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System