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: Yes that is good please make a booking for 8 people at 14:15 on sunday. Sentence2: I need a place to stay that has free parking and is in the expensive price range. Sentence3: I need it to go between the hotel and restaurant, please. Sentence4: Yes, I would like to eat Chinese food. Sentence5: Oh I have some great options for you. I have a total of 4 restaurants, how about trying th Ugly Duckling? Sentence6: I can help you with that. Do you have any cuisine preferences? Sentence7: Yes please, I need rooms for 8 people starting Sunday for 3 nights. Sentence8: TO THE RESTAURANT! JUST BOOK IT< YOU HAVE ALL OF MY INFO! thank you Sentence9: I need a taxi from the hotel to the restaurant by 14:15. Please provide the car type and contact number Sentence10: Booking was successful. The table will be reserved for 15 minutes. Your reference number is 076ZN8YF Sentence11: Your taxi booking has been completed! The car type is a red Audi, Contact number 07964587638. Can I assist with anything else? Sentence12: The huntingdon marriott hotel is a 4 star hotel Sentence13: It doesn't matter. I would like 4 stars and fee wifi though. Sentence14: Yes it has both, would you like me to book you? Sentence15: Thank you and enjoy your stay! Sentence16: No, that is it for now. Thank you so much. Sentence17: I need to know where you are going? Sentence18: I found 33 hotels that match that criteria. Is there a particular side of town you prefer so I can make a recommendation? Sentence19: Booking was successful. Reference number is : TBICSA49 . Is there anything else I can assist you with? Sentence20: I will be happy to book that for you. Where is your destination? Sentence21: Hello, I am looking to find a restaurant that is in the centre. I would prefer something in the expensive price range. Sentence22: That sounds great! Does it have free parking and free wifi? Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User