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 would like to blow my budget at an expensive restaurant in the centre area. Sentence2: I'd love to have some Persian food. Sentence3: Could I get a taxi please from that park to take me to the restaurant in time for my reservation? And give me contact number and car type too please Sentence4: Yes, that's it! Thanks so much, bye! Sentence5: You're welcome and enjoy your stay. Sentence6: Sounds like you are celebrating. What type of food do you want to have? Sentence7: I could recommend Eraina. It is expensive and serves European food in the center. Sentence8: The Cambridge University Botanic Gardens is in the centre of town. Entrance fee is 4 pounds. Is there anything else I can assist you with? Sentence9: how about one that serves european food? Sentence10: Yes, a white bmw is booked. The contact number is 07805333203. Will that be all for you? Sentence11: Unfortunately, there aren't any expensive Persian restaurants in the center of town. Are you interested in a different type of expensive food? Sentence12: Sounds perfect. Can you book me a table for 2 at 17:45 on wednesday? Sentence13: I have booked a table for two at Eraina. Your reservation is at 17:45 on Wednesday, and your reference number is QEYTLGLK . Can I help you with anything else? Sentence14: Is there park in the same area as the restaurant? If so can you tell me what the entrance fee is? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User