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'm sorry, I do not understand your request. Would you like help with anything else? Sentence2: Sounds great I need reservations for 7. I also need the reference number. Sentence3: You didn't select restaurant so I can not assist. Please fix. Sentence4: TR8842 will leave at 15:17 and arrive by 16:08. Would you like to make a reservation? Sentence5: Certainly! It is located in Market Square, which is in the center of town, and the postcode is CB23PQ. Is there anything else I can help you with today? Sentence6: Jaja.. You're funny. Thanks for all your help today. Have a great day! Goodbye Sentence7: Can you call the police because my purse was snatched as i sitting on this bench talking to you. Sentence8: I am looking for a train from London Kings Cross to Cambridge. I need to leave after 15:15 on Friday. Sentence9: of course, enjoy your visit! Sentence10: Great, you're booked. The reference number is : WEHJ6M9J . Anything else I can help you with today? Sentence11: Sounds great. Can I get the address and postcode for that? Sentence12: Please book the ticket. Sentence13: You must see great saint mary's church!! Sentence14: Where can I find the best architecture? Sentence15: Absoluting I will get right on that. Sentence16: Yes, could you suggest some thai restaurants in the area? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System