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 have many to choose from. What area do you prefer? Sentence2: No specific area but i do need free wifi and need it to be in the moderate price range. Sentence3: Our reunion is on Tuesday so I want to leave that day. Sentence4: Kings lynn. Please give me the price, travel time, and train ID Sentence5: Can you help me find a train going to cambridge leaving after 21:15? Sentence6: Thank you for using our system today! Sentence7: The TR9704 train leaves Kings Lynn at 22:11. The travel time is 47 minutes. The price is 9.80 pounds. Do you know the area you'd like to stay? Sentence8: Great! I can help you with that. Where would you like to leave from? Sentence9: it doesn't matter book a room for 3 for 1 night the same day, and I'll need the reference number too please Sentence10: That's all I need, thank you so much! Have a nice day! Sentence11: I have two lines. 22:11 is the closest to your departure. Does that work for you? Sentence12: There are 11 locations, would you prefer one with parking included? Sentence13: Sounds good to me. Oh, and I'm also looking for a place to stay. Sentence14: Thanks so much that is great. Sentence15: No, area doesn't matter. I do want a 4 star guesthouse though. Sentence16: sure, do you know what day you're traveling? Sentence17: I will certainly use Cambridge TownInfo again. Goodbye. Sentence18: Okay i booked you at the Acorn and your reference number is G5FTA5L5 . Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User