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: I also need a train on Tuesday departing from Broxbourne. Sentence2: No, there is not anything earlier than 18:32. How many tickets do you want to purchase? Sentence3: The arrival time for TR8653 is 19:32 and the travel time is 60 minutes. Sentence4: We have 5 colleges to visit on the west side. Churchill College is a nice one, and it's free to enter. Sentence5: What time did you want to travel? Sentence6: Hey, I was wondering if there are any multiple sports venues on the west side? Sentence7: What time would you like to arrive by? Sentence8: Not on the west side, no. There is on multiple sports venue in Cambridge, and it's in the east. Sentence9: what is its arrival time and how long will it take? Sentence10: Sure thing, the address of Churchill College is Storey's Way, postcode cb30ds. Is there anything else I can help you with today? Sentence11: Leaving anytime after 17:45 please. Sentence12: If there isn't anything earlier that is close to 17:45 I will take the train at 18:32. Sentence13: How about a college to visit instead? Sentence14: The closest train is TR8653, it leaves at 18:32, shall I book you? Sentence15: Can I have the address and postcode of Churchill College and entrance fee? Sentence16: The earlier the better, so whichever train leaves closest to 17:45 Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User