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 booking was successful and your reference number is 10TULA8Z . Sentence2: Does it have free wifi? Sentence3: What day would you be arriving? Sentence4: Let's finish booking the cambridge belfry first. How many people are going to stay? Sentence5: Have a great trip. Goodbye. Sentence6: I have Pizza Hut City Centre, Ask, and Zizzi Cambridge. Which would you prefer? Sentence7: The booking was successful for 2 nights at The Cambridge Belfry with check-in on Saturday. Reference number NCCFYY9W . Would you like to book that taxi now? Sentence8: I'd like a place in the centre. Sentence9: There will be 6 people staying for two nights. Sentence10: Zizzi please, can you book me for 6 people on saturday at 16:15? Sentence11: I don't need anything else. Thank you, bye! Sentence12: Yes, it has free wifi. Would you like me to book it? Sentence13: Yes, please. I want to book if to get me to the restaurant on time. Sentence14: I found The Cambridge Belfry. It is cheap but well valued. Sentence15: You are all set the car type is a yellow honda and the contact number is 079969243265. Do you need anything else today? Sentence16: Can you tell me about any cheap priced italian restaurants in cambridge? Sentence17: Yes and I need the reference number. Also I need a taxi to arrive at the restaurant on time. I would like the number and car type please. Sentence18: We need to check in on Saturday. Sentence19: Thanks! I also need to find a cheap hotel. Sentence20: i got a variety. which is your prefered location? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System