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 don't want to leave. I want to stay for 3 nights starting on Tuesday. There will be 6 of us. Sentence2: I would like to find an expensive hotel to stay in during my visit. Sentence3: I would like one that serves northern european food, if possible. Sentence4: Great. I was able to book your car with no issues. They will be driving a black Tesla and you will be able to contact them at 07224648595. Sentence5: And you never have to leave if you don't want to. I have booked a reservation at Huntingdon Marriott Hotel and the reference number is EQNKY1ZC . Anything else? Sentence6: Will you be going back to the hotel or somewhere else? Sentence7: I'm not picky with the area. I just want it to be moderately priced. Sentence8: Yes, please book it if possible. Sentence9: I can help with that. What area will you be staying in? Sentence10: I'm sorry, there are no moderately priced hotels in this area. Would you like to try another? Sentence11: Thats sounds great. can i get the area and address ? Sentence12: I was looking for a restaurant. I already have a hotel reservation Sentence13: We have quite a few choices for you today, how about de luca cucina and bar, you can a few drinks while your there! Sentence14: Great I believe that covers everything. Goodbye. Sentence15: There are 3 restaurants matching your query. Do you prefer the south or the centre? Sentence16: The hotel I guess. Sentence17: The area does not matter. But will for sure want it to be an actual hotel. Sentence18: What day would you like to leave Sentence19: I'll need a taxi that leaves the restaurant by 22:00. Sentence20: I have the in the Huntington Marriott hotel city center that is rated 4 stars and include free parking and free wifi. Would you like me to check availabiltiy? Sentence21: Thanks for contacting us today. Have a great day and trip. Goodbye. Sentence22: Yes, are there any moderately priced northern european restaurant, if no northern european, modern european will do. Sentence23: I would like the restaurant in the same area, Cambridge, please. Sentence24: And would you prefer the south of Cambridge or the centre of Cambridge? Sentence25: There are a couple in the centre area and one in the south area. Do you have a preference? Sentence26: The area is the centre. The address is 83 Regent Street. Is there anything else I can help you with? Question: Who has spoken the sentence 21? (A) User (B) System
Output: 


Answer: (B) System