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 am looking for a place to dine that serves modern European food that is located in the Centre. What is your suggestion for this type of restaurant? Sentence2: You're welcome! May I help with anything else? Sentence3: Yes, I think that will do just fine. What's the price and length of trip, please? Sentence4: I have train TR3685 departing Friday at 13:00 would that be suitable for you? Sentence5: I'm sorry, but it appears there is no opening for that time. would you like to try for a different time? Sentence6: Booked! Reference number: NA0XWZAR . Your table will be held for 15 minutes. Sentence7: Okay, what is your destination and what day would you like to travel? Sentence8: Train TR2874 leaves the earliest at 13:31. Have a great day! Sentence9: The price for the trip is 12.80 pounds and its 49 mintues Sentence10: I'd like a cheap price range please. Sentence11: Thanks. I'm also looking for a train that departs from cambridge and leave after 11:15. Sentence12: That will be all, goodbye. Sentence13: I'll be going to Stevenage on Wednesday. Sentence14: Yes, that sounds great. Can you reserve me a table on Tuesday for 6 people at 18:00. Sentence15: the river bar steakhouse and grill matches all the things you are looking for .Would you like me to make you a reservation? Sentence16: I have a couple of options for you, what price range would you like? Sentence17: Okay, thank you for that information! Sentence18: Yes try 17:00 instead please Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System