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: Great! Thank you for your help. Sentence2: There are several trains departing on Friday every :39 of the hour from 9:39 to 23:39. Would you like me to book one of these for you? Sentence3: What day and how many people are you looking to book for? Sentence4: I'll go with the 9:39. Sentence5: Ok, I have three tickets booked on the 9:39. The reference number is QOL9GX6F . Does Pizza Hut Fen Ditton sound good? It's the only Italian restaurant in east. Sentence6: Please modify the booking for three people please. Sentence7: Ok, I have booked dinner for three on Saturday at 16:30 at Pizza Hut Fen Ditton. Your reference number is MLMBLJEG . Enjoy your meal! Sentence8: Thank you for choosing Cambridge TownInfo centre. Have a nice trip! Sentence9: Wonderful, your train has been booked! Sentence10: What trains leave London Liverpool Street and go to Cambridge? Sentence11: Yes I think that would be good. Is that available at 4:30 PM? Sentence12: There are several trains that depart from London Liverpool Street on Friday. Is there a particular time you wish to leave by? Sentence13: Sure. Just a moment. Sentence14: I think I forgot to add that I will need the booking for 3 people please. Will you modify the booking for me? Sentence15: I am looking for 3 people, at 16:30 on saturday. Sentence16: I need a reference number for the train. Then I need to find a moderate Italian restaurant in the east for 3 people at 16:30 on Saturday, and a reference number. Sentence17: Thank you that is all the info I need. Sentence18: Yes, sometime after 09:15. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User