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: Okay, you are very welcome! Goodbye! Sentence2: Yes please for two people at 16:15 on Wednesday please if its not too much trouble. Sentence3: Restaurant Restaurant Two Two is an expensive French restaurant in the north with wonderful food. Would you like to book a table? Sentence4: Yes, could you help me find a nice place to dine in the north. Sentence5: Thats all for today thanks ! Sentence6: Booking was successful. Reference number is : DYAMG2CY . Can I help you with anything else today? Sentence7: The Avalon is a 4 star hotel in north Cambridge that is in the moderate price range. Would you like their phone number? Sentence8: I have made your reservation at restaurant two two. Your reference number is VIVBN8WU . Sentence9: Can you please try French food instead? Sentence10: Do any of these places serve Vietnamese food? Sentence11: Unfortunately, there are no results. Would you like me to search a different area or food type? Sentence12: We have many fine places in the north. I personally recommend the City Stop. Sentence13: Can you tell me about a particular hotel called the avalon? Sentence14: Actually, could you book a room for me? I need it for 2 people, 5 nights. We'll arrive on Wednesday. Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User