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, we have Chinese, Indian, Italian or Mexican that you could choose from. Sentence2: I'd like to make it for Wednesday. Can you include the reference number? Sentence3: Okay, how about the good luck chinese food takeaway? Will that work for you? Sentence4: Yes, that sounds good! Book a table for 3 at 13:45 please. Sentence5: I need a hotel in the same price range as the restaurant that has free parking and free wifi for the same group for 3 nights starting from the same day. Sentence6: There are 5 results matching your requirements. What area of town would you like? Sentence7: The area does not matter. Just the criteria I stated. It will be starting Wednesday. Sentence8: I'll be happy to help you with that. What day would you like the reservation for? Sentence9: Please find me an expensive place to dine on the South side of town Sentence10: Yes I will book it for you and get a reference number ? Sentence11: How about chinese. Sentence12: Ok and for how many days ? Sentence13: how about 1 nights. Sentence14: If you can book it for my group, I need it for 3 nights starting on Wednesday. Sentence15: How about the University Arms Hotel? It has free parking and wifi, and it's a 4 star rated hotel. Sentence16: Your reservation is all set for Wednesday. Your reference number is 68X7U9IG . Is there anything else I can help you with? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User