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: Sure. Can I make a reservation for you? Sentence2: Thank you, one last thing we need a place to dine at in same area as multiple sports that would be in moderate price range. Sentence3: I have three options. Two Indian places and one Italian. Curry or pasta? Sentence4: Thank you as well. I hope you enjoy your visit and have a wonderful day. Sentence5: Pizza hut fen ditton is a great italian restaurant in the area. Would you like a reservation? Sentence6: I would like curry prince. It sounds interesting. Sentence7: Sounds good. Enjoy your visit, and thanks for using Cambridge TownInfo centre! Sentence8: I do have one. It is the Cherry Hinton Village Centre in the east. It is located on Colville Road, Cherry Hinton. Would you like any other info for them? Sentence9: I wanted traditional food. If that's not available I'll try Italian. Sentence10: Sure! The post code is cb58jj and the phone number is 01223566388. Sentence11: No reservation thanks, my plans are still in the works. Could I have the postcode and address though? Sentence12: I'm sorry, I said Italian but I really wanted indian food. Sentence13: Thank you, that's everything I need for now. Sentence14: There are 2 option to choose from: curry prince and rajmahal. Which would you like to try? Sentence15: I am looking for attractions of multiple sports located in the east. What is available? Sentence16: No, that sounds like just what I need. Thanks for your help and have a great day. Bye. Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System