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: Sure, their postcode is cb58sx and their phone number is 01223902112. Can I assist you with anything else today? Sentence2: Thank you for contacting Cambridge TownInfo centre. Goodbye! Sentence3: Thank you, can I get the postal code and phone number as well? Sentence4: I have many places on the east side. Would you like a museum or maybe a boat? Sentence5: El Shaddai is 0 stars and has internet and parking. How many people will be staying? Sentence6: We have 2 choices city centre north b and b in the north and el shaddai in the centre, both are guesthouses in the cheap range. Sentence7: They both offer free parking but they are both 0 stars. Sentence8: I'm not booking it now, just gathering information which you have provided. Thank you very much! That is all I need. Goodbye. Sentence9: I am looking for places to go in the east side of town. Sentence10: Camboats is available in the east area their address is the plough, green end, fen ditton Sentence11: Alright, I just need to know how many people will be staying there, from what day, and how many nights, please? Sentence12: Whichever one provides free parking and is at least a 4 star will work. Please book and provide a reference number. Sentence13: I would like a boat type. Thank you. Sentence14: Alright pick one then. Sentence15: Does it have internet? Sentence16: Yes. I need a hotel with a star rating of 0 that includes free parking. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User