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: TR5886 leaves at 09:17, price is 23.60 pounds a person, do you want me to book you? Sentence2: We have many trains available that are leaving london kings cross after 8:15. What is the location of your destination? Which day would you like to leave on? Sentence3: I will be leaving after 8:15 from london kings cross. Sentence4: Which one would you recommend for me to visit as a tourist? I need the postcode, entrance fee and phone number for it. Sentence5: Is there a certain area you're looking at? Sentence6: I have made that reservation and your reference number is IADFZDHY . Sentence7: sweet, brah. i'm also looking to book a train. Sentence8: Thank you for contacting us and have a nice day. Sentence9: I highly recommend downing college. It's free! The postcode is cb21dq and the phone number is 01223334860. Sentence10: Yes, I'm looking for something close to the center of town. Sentence11: Thank you. Yes I would really love for you to book the train for 2 people. Sentence12: Is there a college in the centre area that you could give me more information on? Sentence13: Great, thanks so much! That's all I'll be needing! Bye bye! Sentence14: There are several, what would you like to know? Sentence15: Okay brah where you leaving from? Sentence16: I'm not finding anything close to the centre of town. Is there another area you'd like me to check for you? Sentence17: Any suggestions for entertainment? Sentence18: I will travel in Tuesday. Arrival is not important. Question: Who has spoken the sentence 17? (A) User (B) System
Output: 


Answer: (B) System