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 isn't, and unfortunately I don't have a hotel that matches that criteria. Sentence2: I have the alexander bed and breakfast or el shaddai. Which would you prefer? Sentence3: Alexander Bed and breakfast, can I get the address and hotel type please? Sentence4: Is Cityrooms 4 stars? I'm sorry I forgot to specify, but I do require it. Sentence5: Okay, how about one in the cheap price range? Sentence6: No thank you, I'm just looking for now. That's everything I needed. Sentence7: Cityrooms is the one moderately priced hotel in the area. It has free wifi but no free parking. Would you like me to book you? Sentence8: Your car is a black tesla contact number 07908996217 Will that be all? Sentence9: I'd like to leave the hotel by 11:45 please. Sentence10: It's a boat attraction in the centre area. Do you want their phone number? Sentence11: Excellent. That's all i needed. Sentence12: alexander bed and breakfast is a guesthouse. The address is 56 saint barnabas road. Is there anything else I can help you with? Sentence13: i am also looking for scudamores punting co, what attraction type is it? Sentence14: Hi. I'm looking for some moderately priced rooms for the night in the centre of town. Where can I go for that? Sentence15: Sure. What time would you like to leave and from which destination? Sentence16: No, I just need a taxi to get between the two places. Sentence17: I hope you enjoy your visit to Cambridge! See you soon! Sentence18: Very good. If we can be of more assistance please let us know. have a good day! Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System