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: How about a theatre type? Sentence2: I have the University Arms Hotel. Would you like to make a booking? Sentence3: Thank you for using the Cambridge Town Info Centre Services! We hope you enjoy your time in Cambridge Sentence4: How about the ADC Theatre? It's located in centre. Would you like more information? Sentence5: The adc theatre address is park street post code is cb58as Sentence6: i am looking for places to go in town. The attraction should be in the type of entertainment and should be in the centre. Sentence7: Can you tell me the address? Sentence8: I would also like to find and expensive, 4 star place to stay. Sentence9: Would you like the hotel to also be in the centre area? We have one in centre and one in the west area. Sentence10: i want to drive by 05:00. Contact number and car type, please. Sentence11: In the same area as the attraction please. So I guess centre Sentence12: your all set! reference number is YE34VAVO . Anything else? Sentence13: I'm sorry, I couldn't find anything like that in the centre. Sentence14: Your booking is completed, a blue bmw will be picking you up. Their contact number is: 07241940832. Do you need any further assistance today? Sentence15: That was all I needed. Thanks so much! Sentence16: Yes please, 6 people for three nights starting on tuesday. Sentence17: What time would you like to leave and or arrive? Sentence18: Yes I would like a taxi from the theatre to the hotel. Question: Who has spoken the sentence 16? (A) User (B) System
Output: 


Answer: (A) User