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: it should leave the restaurant by 14:00 Sentence2: Just one. Sentence3: I also need to find an Indian restaurant in the east. What ever you recommend. I need the postcode and address as well. Sentence4: I'd like to stick to the cheap price range please in the Centre. Sentence5: For how many, and when would you like to arrive? Sentence6: that will be fine. i also want a taxi to commute between the to places. Sentence7: yes, it has a four star rating. Sentence8: Okay have a great day and a great trip! Sentence9: Thank you so much. That's all I need today. Sentence10: How many people are in your party? Sentence11: I would suggest curry prince. Address is 451 Newmarket Road Fen Ditton and postcode cb58jj. Is there anything else I can assist you with? Sentence12: You're in luck, we have lots of places you can stay at! Do you have an area preference or a price range that you want to stick to? Sentence13: Booking was successful. your Reference number is : PV4MAEDL . is there anything else i can help you with? Sentence14: Awesome, please book it for 2 nights starting Tuesday Sentence15: I am looking for a place to stay. Sentence16: Does it have a star rating of 4? Sentence17: How about Alexander Bed and Breakfast? It is a cheap 4 star in centre. Sentence18: Booking was successful! Your car is a white ford and you can contact them at 97556660882 should you need to. Sentence19: What are your departure and arrival sites and times? Sentence20: Also please provide me with contact number and car type. Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System