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: Your welcome. Have a great night! Sentence2: The Man on the Moon concerthall is on Norfolk Street, but it does not list an entrance fee. That seems to be the only thing you would like. Sentence3: The travel time is 1 hour. There's a train leaving at 08:32 and arriving at 9:32, will that be acceptable? Sentence4: Any arrival time is fine, can you give me an arrival time and travel time? Sentence5: I'm looking for a train leaving from Broxbourne on Tuesday. Sentence6: I am going to Cambridge. I would like the train to leave on Tuesday after 08:15. Sentence7: There are many to choose from. Where are you going and what day would you like to travel? Sentence8: I am looking for either a theater, zoo, fair, or concert. What are the entrance fee's for each? Sentence9: Yes that's fine. I am looking for something to do for entertainment, any attractions you could tell me about? Sentence10: I think that is all I need for now. Thanks, bye. Sentence11: Yes, there are quite a few attractions. What type of entertainment are you looking for? Sentence12: Do you have an arrival time in mind? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User