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'm looking for an upscale, expensive place to eat on the west side of town. Sentence2: I would. Can you book me a table for 1 on Tuesday at 11:45? Sentence3: Yes, can you try 10:45? Sentence4: What type of food are you looking for? Sentence5: How about some indian food? Sentence6: I'm sorry. There are no restaurants matching your criteria. Sentence7: Great! Enjoy your meal! Goodbye! Sentence8: Thank you, that's all I need. Sentence9: Okay now I have many options would you like a reservation at one of them? Sentence10: I'm sorry, all 5 restaurants meeting your criteria are booked at this time. Would you like me to try a different time slot? Sentence11: I'm really in the mood for Jamaican food. Sentence12: I was able to book you a table at Rice Boat on Tuesday at 10:45. The reference number is YTG3EOGF . Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User