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: Your booking was successful, the total fee is 14.32 GBP payable at the station. Your reference number is 4YAT8PVP . Sentence2: Does that depart from broxbourne station? Sentence3: The price is 14.32 pounds per person. Sentence4: I'm glad I could help you. Goodbye. Sentence5: I would prefer to leave after 13:45 please Sentence6: Alright, I have train TR4813 that leaves Sunday at 14:32 from Broxbourne. Will this work better for you? Sentence7: I will do so... and you too. Sentence8: the train id is TR5219 and it leaves london kings on friday Sentence9: Is there a certain time of day you would like to travel? Sentence10: Sorry. I need to narrow down the 133 trains from Broxbourne to Cambridge. First, what day do you want to leave? Sentence11: Thank you, I will buy a ticket for 14.32 pounds for train TR4813 leaving Sunday at 14:32. Sentence12: Yes as long as it is going to cambridge that sounds fine. I'll need the price also please. Sentence13: I'm looking for a train going to cambridge please. Sentence14: thanks for inquiring with us. have a nice day Sentence15: Thank you so much, have a wonderful day. Sentence16: I want to leave on sunday Question: Who has spoken the sentence 15? (A) User (B) System
Output: 


Answer: (B) System