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 want to leave the restaurant by 17:00 please. Sentence2: I have 15 in the centre. Did you have a food type preference? Sentence3: What time would you like the Taxi? Sentence4: Their phone number is 01223334860, they are located at regent street, and their postcode is cb21dq. Sentence5: Your booking is complete. It will be a white honda and its contact number is 07316123574. Sentence6: Thank you! Hope you have a wonderful trip! Sentence7: Rice House sounds interesting, and I need some cheap egg rolls. What postcode is that place in? Sentence8: Can I get their phone number, address and postcode please? Sentence9: There are not. The only multiple sports center is located in the east. Would you like more info on it? Sentence10: I'd like a taxi to commute back and forth please. Sentence11: Sure. We have 13 colleges in the city centre. While many are free, some do have an entrance fee. Sentence12: The post code is cb12bd. They have amazing egg rolls! Sentence13: Thanks - I am also wondering if there are any multiple sports attractions in the city centre. Sentence14: There are three Chinese restaurants. They are charlie chan, rice house, and golden house. Does one appeal to you? Sentence15: How about a college type attraction in the same area as the restaurant then? Sentence16: Could you find me a cheap restaurant in the centre please Sentence17: I would say Downing college is the best. What info shall I provide you with concerning that place? Sentence18: Would you recommend one? Sentence19: Is there one that serves chinese food? Sentence20: Thanks a bunch. Have a great night. Take care. Bye. Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User