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: The first train leaves at 5:24. Sentence2: I think that should be it for today. Thank you so much for all of your help, you've been very kind! Sentence3: I would like to go to a museum the area doesn't matter. Sentence4: I'll be going to cambridge from stansted airport. I'd like to arrive by 09:30. Sentence5: Ok, that will work out. Can I have the train ID # please? Thanks so much Sentence6: Sounds good. I am also looking for a train for tuesday. Sentence7: Which is your favorite, and what area is it in? Sentence8: Are you looking for a place to stay, to eat, or a attraction to visit? Sentence9: I'd be happy to help you with that. Can you tell me where you're leaving from and your preferred travel times? Sentence10: I am looking for information in Cambridge. Sentence11: The train ID is TR9892. Sentence12: Your welcome, enjoy your stay in cambridge. Sentence13: We have many museums in Cambridge. Would you prefer one with a free entrance fee? Sentence14: I like byard art. It's located in the south. Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System