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: What about a Mexican food restaurant also in the south part of town? Sentence2: Booking was successful. The table will be reserved for 15 minutes. Reference number is : 2RJ7AU7V . Is there anything else I can help you with? Sentence3: I'm sorry, I'm not finding a restaurant in the south that serves New Zealand food. Sentence4: I will try the Lovell lodge. Will you book a room for me starting on Monday for 3 nights, please? I am traveling alone. Sentence5: That will be all then, thank you. Sentence6: Thank you and enjoy your stay in Cambridge! Sentence7: Yes, there is Chiquito Restaurant Bar, which is an expensive Mexican place in the area. How does that sound? Sentence8: That sounds good. Please book a table for 1 people at 13:15 on Monday. Sentence9: I also need to book a hotel. It needs to have 2 star and be of a moderate range with free parking. Sentence10: I have two such entries. Both are hotels in the north. There is the ashley hotel and lovell lodge. Do you have a preference? Sentence11: I need to find a restaurant in the south to dine at that serves New Zealand food. Can you help? Sentence12: There is a known system glitch within dialogue systems where some things cannot be booked, the hotel can be reached at 01223425478, I apologize any other questions today? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User