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 am so sorry but the panahar is fully booked. My I find another restaurant for you that serves Indian food? Sentence2: Yes, please make a reservation for 6 people at Panahar on Sunday at 13:00. Sentence3: Okay. I was able to get you into the Golden Curry instead. Your reference number is OXKPJH2R . Sentence4: I am looking for a place to dine that serves indian food and is located close to the centre, can you help me please? Sentence5: Yes please, in the same area and price range, please. Sentence6: May I have the reference number for the reservation? Sentence7: You are booked at Panahar on Sunday at 13:00 for 6 people. Is there anything else I can help you with? Sentence8: We have nine Indian restaurants in the centre, with prices ranging from cheap to expensive. Do you have a preference? Sentence9: You are so welcome. Sentence10: I would like a restaurant in the expensive range. Sentence11: Thank you so much. Have a great day. Sentence12: There are several. Would you like to book a table to Panahar, or perhaps one of the others? Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System