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: What day would you like to travel? Sentence2: I need to travel on Tuesday after 15:15. Sentence3: I'd like a train leaving Cambridge for Broxbourne, please. Sentence4: I'm not ready to book yet. I'm also looking for a place to stay. Sentence5: I can help with that. There are 33 choices. Is there a specific price range you would like to stay in? Sentence6: Alright, thank you for contacting Cambridge TownInfo centre. Have a great day! Sentence7: The cityrooma hotel is located in the centre and is of moderate price range. Would you like me to make reservations? Sentence8: I really want to stay in a 0 star establishment, ideally in a moderate price range. I don't care if there's free parking, but it has to be a hotel. Sentence9: No I believe that will be all for now. Thank you for your help! Sentence10: I have the TR1835 going from Cambridge at 16:01 to Broxbourne at 17:01. Does that sound suitable? I can book some tickets for you if you like. Sentence11: Could I get the price first? Sentence12: 17.90 pounds is the price. Sentence13: Please book it for 1 person, for 4 nights starting friday. Sentence14: Your reference number is XCJE8L9R, is there anything else you need? Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User