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: Let's go for the guesthouse please Sentence2: Please give me their price range and postcode. Sentence3: Yes I can. Is there a type of food that you are looking for? Sentence4: Alexander Bed and Breakfast is the guesthouse. Would you like me to book it for you? Sentence5: Nandos City Centre is a Portuguese Cuisine in the town Centre. Would you like to make a reservation? Sentence6: I am looking for a place to dine in the Centre. Can you help me? Sentence7: Yes, I am also looking for a 4 star hotel. Sentence8: Yes it has free parking and free wifi. Sentence9: i would like it near the centre. Sentence10: I have one guesthouse and one hotel that would work. What price range did you want? Sentence11: Can you tell me if it has free parking? Sentence12: Absolutely! The price range is cheap. It's postcode is cb23ar. And the address is 33-34 Saint Andrews Street. Can I help you with anything else? Sentence13: check for portuguese food. Sentence14: Sorry there are no matches do you want me to look for any other type of cuisine? Sentence15: No reservation but can I get the price range, the post code and the address? Sentence16: Cheap price range and postcode is cb12e Sentence17: Light bites, please. Sentence18: What area of the city would you like the hotel to be in? Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User