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: It doesn't matter what time I arrive Sentence2: Yes, can I get the train ID please? Sentence3: Great info. I need help with a train to london kings cross that leaves after 14:00. Sentence4: We will get you setup on train ID TR6203, arriving in london kings cross at 15:51. Sentence5: There are 5 trains travelling that route at that time. When do you want to arrive? Sentence6: Most colleges are located in the centre area, the entrace fee varies, anywhere from free to 2.50 pounds. Sentence7: Alright. Trains from cambridge to kings cross leave on the hour every other hour, starting at 15:00 and running to 23:00. Would you like to book a trip? Sentence8: Definitely. We have many attractions in Cambridge. What type of place are you looking for, or in which area of town? Sentence9: Great! I will go ahead and book it on my own but thanks so much for the information. That's all for today. Sentence10: It will be from cambridge on saturday. Sentence11: Hey, it's no problem at all! I hope you enjoy your time in Cambridge and please remember to contact the Cambridge TownInfo centre whenever you need to! Sentence12: I would like to visit a college. I'm not sure what area, where are most located? Also, please provide the entrance fee. Sentence13: What is your departure day and site? Sentence14: I am looking for information in Cambridge and looking for places to go in town. Can you assist? Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System