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: Hello! I am looking for places to go in the centre of town. Can you help me with that?! Sentence2: I want to leave the Theater by 17:30 Sentence3: Can I get a taxi to take me between the two places? Sentence4: Thank you, goodbye. Sentence5: No problem. ADC Theatre's address is Park Street and its postcode is cb58as. Do you need anything else? Sentence6: The huntingdon marriot hotel sounds great. Could you please give me the postcode? Sentence7: The post code is pe296fl. Anything else I can help with? Sentence8: Yes, I just need to get the address and postcode for the Theatre. Sentence9: Absolutely. I have many options for you, including museums, architecture, concerthall and theatre. Do you have a preference? Sentence10: Yes, I'd like to stay at an expensive 4 star hotel with free parking and wifi. Sentence11: Okay great. Enjoy your time in Cambridge. Sentence12: Not at all. Sentence13: ADC Theatre is in the centre of town; will that work? Sentence14: Have a great day! Sentence15: Booking completed! Please look out for a Grey Volvo, their contact number is 07820757877. Is there anything else I can help with? Sentence16: I'd like to go to a theatre. Sentence17: What time would you like to go? Sentence18: I have 2 possible hotels. The huntingdon marriott hotel in the west and university arms hotel in centre. Would you like to book one of these? Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User