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: Great, thanks! Also, will you please book me a taxi from the attraction to the restaurant, leaving the attraction at 05:45? Sentence2: There are 13 colleges in the centre of town. Most are free, but some do charge an entrance fee. Any preference? Sentence3: Jinling noodle bar, postcode cb23pp. Is there any more info I can give you? Sentence4: great, i have three options for you to choose from! Sentence5: No, that's it. Thank you very much. Sentence6: Do you prefer a specific type of food? Sentence7: thanks for using our services Sentence8: Oh, I have no idea. Can you just reserve tell me your favorite one? I'll need a postcode for it. Sentence9: corpus christi is popular this time of year. The address is at king's parade. The post code cb21rh and the entree fee is 2 pounds. Sentence10: You are welcome. Thank you for using Cambridge TownInfo centre. Goodbye. Sentence11: Ok, to be clear, which price range do you prefer-- cheap, moderate or expensive? Sentence12: I prefer Chinese food Sentence13: I am looking for a moderately priced restaurant Sentence14: How about choosing a famous one and give me the address, postcode and entrance fee. Sentence15: I would like to visit a college in the same area as the noodle bar, can you find me one? Sentence16: Thanks again. That was all I needed. Sentence17: I was able to book a taxi it will be a red volvo and the contact number is 07754509492. Is there anything else I can help with? Sentence18: I'm looking for a family friendly restaurant that is reasonably price and located in the center of town near attractions, hotels and easy access to transportation such as buses and taxis. Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System