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: Thanks for the info. Can you also tell me if there are any trains on Saturday that leave after 11:15? Sentence2: Certainly, there are 134, do you have an arrival time in mind? Sentence3: I am going to stansted airport and need to leave on Saturday. Sentence4: To help narrow it down, what is your destination and what day will you be leaving? Sentence5: Thanks, Are there trains that depart from Cambridge? Sentence6: Can you tell me what the entrance fee is for Ballare? I also need the address. Sentence7: Thank you! That's all I need today. I appreciate your help! Sentence8: I am looking for a nightclub in the town centre. Sentence9: TR3373 meets your criteria and arrives by 12:08. Would you like to book it? Sentence10: Great the reference number is 7LIC35YA . Sentence11: You are quite welcome! Have a safe flight! Sentence12: Yes I need to book for 8 people and get the reference number please. Sentence13: There are five nightclubs I can show you. How about the Ballare at lion yard? Sentence14: Yes, there are trains that leave after 11:15. Sentence15: address is heidelberg gardens, lion yard. entrance fee is 5 pounds Sentence16: No, but I need to leave after 11:15. Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User