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: There are 133 trains that match that trip. To narrow it down, I need to know what day you'll be traveling and when you want to arrive by. Sentence2: Great can you help me get a train from cambridge to broxbourne? Sentence3: We have three places, but I like the hotpot. Do you need a reservation? Sentence4: Thanks! That's all I needed today. You've been a great help! Sentence5: The Hotpot is a moderately priced restaurant. Their post code is cb41ep. Sentence6: Great. I have booked one ticket on TR5256 to broxbourne. The cost will be 17.89 GBP and your reference number is O9VNFTK9 . Sentence7: I have train TR5256 that leaves at 20:01 and arrives in Broxbourne at 21:01. Would that work for you? Sentence8: You're welcome! Enjoy your travels. Sentence9: Could you tell me the price range first? and the postcode? for the hotpot? Sentence10: That would be great. I'm traveling alone so just one seat please. Sentence11: I'm looking for a restaurant on the North end that serves yummy Chinese food Sentence12: I will be traveling on Wednesday and I would need to arrive in Broxbourne by 21:15. Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User