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: Could you give me a recommendation? Sentence2: Nope that's all thanks! Sentence3: Thank you for contacting us have a good day. Sentence4: How about 09:45 instead? Sentence5: I only need a booking for a party of 1. Sentence6: That sounds fine. Can you book me a table at 10:45 on Sunday? Sentence7: I have several options. What price range would you like? Sentence8: Sure, TR1873 is 60.08 GBP per ticket and is a 163 minute journey. Is there anything else I can do for you today? Sentence9: Ok, how many people will you be dining with? Sentence10: I am sorry that time is unavailable as well. Would you like to book for another day or time? Sentence11: How about The Ghandhi located at 72 Regent Street? Sentence12: i would like the 22:40 Sentence13: Sure, that is train TR1873. Would you like me to book some seats for you? Sentence14: Your booking was successful! Your reference number is 9F8YFU1O . Is there anything else I can help you with? Sentence15: No thanks. I will book later. But can I get the price and travel time please? Sentence16: How about 9:45? Sentence17: I am sorry that time is unavailable. Would you like to book for another day or time? Sentence18: There are three trains that meet this criteria, two from Birmingham New Street at 22:40 and 23:40, and one from London Liverpool Street at 23:39. Which do you prefer? Sentence19: Yes, I need to find a restaurant that serves indian food in the centre of town. Sentence20: I'm planning a trip to Cambridge and I'm looking for a train that leaves sunday and arrives at 5:30. Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User