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: I'd actually like to book a taxi to commute between those two places you found for me. I need to leave the hotel by 09:15 please. Sentence2: Can I help you with anything else today? Sentence3: Unfortunately, the hotel is not available for your criteria. How about checking another hotel? Sentence4: The Curry Garden is located at 106 Regent Street City Centre, postcode cb21dp. Would you like to conduct more searches for other locations? Sentence5: Is it available for 4 nights starting from Sunday for 6 people? Sentence6: The Curry Garden is a popular choice. Sentence7: I need a hotel with free wifi but I don't need free parking. Sentence8: I'm looking for one that is moderately priced and don't have a preference on where exactly it is. Sentence9: Let's go with that. What's the address? Sentence10: thank you for your help goodbye Sentence11: Thank you, I also need a place to eat in the centre of town. Sentence12: I found quite a few options for you. Could I narrow it down by price range? Sentence13: I'm looking for Indian food, please. Sentence14: The Ashley hotel is the North and is priced at moderate. Sentence15: I was able to book that, reference number is 49SWXAT1 . Sentence16: Sure! I have booked a yellow BMW to pick you up at 09:15 from your hotel. The contact number for the taxi is 07744629357. Sentence17: No That is all. Again thank you. Sentence18: Thank you and good bye! Sentence19: could you try the same one, three nights only? Sentence20: There are over 30 to choose from. Is there a certain part of town you prefer? Sentence21: Great! Thank you for your help. Sentence22: No, price does not matter. Right now I'd just like a recommendation. Sentence23: Thank you for using the Cambridge TownInfo centre. Have a good day. Sentence24: Yes can we narrow it done by food type or price range? Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User