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: The booking was successful. Your table will be reserved for 15 minutes. Your reference number is : 3MC54ZYM . Is there anything else I can do for you? Sentence2: There's two places that match your criteria. One is indian food and the other is italian. Would you like the address of either? Sentence3: Actually, let me get more information first. What is the travel time and price? Sentence4: I am traveling to Cambridge on Saturday. Sentence5: Did you want me to reserve the train for you? Sentence6: Can you book it for me and get a reference number ? Sentence7: Yes I can. Please tell me where you're departing from and what day and time and I'll get you some options. Sentence8: Ok! The restaurant is called Da Vinci Pizzeria and the address is 20 Milton Road Chesterton with postcode CB41JY. Would you like to reserve a table? Sentence9: I'll be happy to assist with that, how many tickets would you like me to book? Sentence10: Yes, I'm also looking for a train that will depart from Peterborough. Can you help me with that? Sentence11: I would love to know the address of the Italian place please, that sounds perfect! Sentence12: Leaving peterborough and must arrive at least by 12:15, I'll need to book a table then too Sentence13: TR8494 leaves peterborough saturday at 11:19 and arrives in Cambridge at 12:09. Would you like me to book passage for you? Sentence14: No that is everything, thanks for your help. Sentence15: Thank you. That is all that I need. Sentence16: Where are you heading to from Peterborough? Sentence17: I am in the north part of town, can you tell me what cheap restaurants are around? Sentence18: Yes I would, I need it for Saturday for 5 people at 18:00 please. Sentence19: Travel time is 50 minutes, and the price is 13.20 pounds. Sentence20: You are welcome, enjoy your stay. Question: Who has spoken the sentence 16? (A) User (B) System
Output: 


Answer: (A) User