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'm sorry... are you staying with two people for two days, or alone for five days? Which days would you like me to reserve? Sentence2: Can you suggest one for me please. I need the postcode, entrance fee if any and phone number Sentence3: You're welcome! Have a great day! Sentence4: Never mind the booking. I need a taxi. Sentence5: Great, that's all I need...thanks so much! Have a great day! Sentence6: The taxi is all set, look for a grey toyota, they can be reached at 07596698267 if there are any issues. Any other questions? Sentence7: the fitzwilliam museum is a museum is free. Postcode: cb21rb. Phone: 01223332900. Sentence8: The Fitzwilliam Museum is my destination. Sentence9: Can you book a room there for 2 people and two nights? I'll need a reference number as well. Sentence10: Also looking for a 4 star hotel in the same area as the museum. Sentence11: What is your destination? Sentence12: Thank you that's all I needed today. Sentence13: can you recommend a good place to go in the centre? Sentence14: I want to leave the hotel by 20:00. Sentence15: you are welcome all the time Sentence16: Okay what time do you need the taxi? Sentence17: i will be staying for 5 days Sentence18: What day will you be staying? Sentence19: Yes! What type of attraction would you like to visit? Sentence20: We have the University Arms, which is an expensive hotel, or the Alexander B&B, which is a charming, but inexpensive, guesthouse. Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System