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: It is in the north area. Would you like a reservation? Sentence2: No that's all. Thank you. Goodbye. Sentence3: You're welcome, can I help you with anything else? Sentence4: What part of the city is that in? Sentence5: I need to double check, does it include wifi? Sentence6: I'm also looking for a guesthouse in the east with 4 stars and free parking, is there a place like that available to stay at? Sentence7: The Allenbell, Leverton House, and Autumn House are inexpensive 4 star guesthouses offering free parking. I have two others that are moderately priced. Do you have a preference? Sentence8: Yes it includes wifi, would you like to me to book your reservation? Sentence9: That's all I need for now. Thank You very much! Sentence10: Wonderful! The address of the hotpot is 66 Chesterton Road Chesterton, and their telephone number is 01223366552. I can help you get a taxi there if you like. Sentence11: Thank you! Do you know what the price range is at the hotpot? Sentence12: It's an expensive restaurant. Sentence13: Thank you for contacting the Cambridge TownInfo Centre. Have a great day. Sentence14: I'll take the Allenbell. It's in the east right? Sentence15: Hi, I am looking for a restaurant called the hotspot. Sentence16: Yes, Allenbell is in the east, at 517A Coldham Lane. It is very affordable. Would you like to set up a booking? Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System