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 can definitely help you with that. First let's book the hotel. When were you wanting to stay? Sentence2: This nightclub is located in the centre of town and has an entrance fee of 4 pounds. Is there any other information that I can provide you with? Sentence3: Your welcome, Have a great day Sentence4: Okay. I have reservations for 5 people starting on Saturday and staying for 4 days at the Lovell Lodge. The reference number is UPYAJTEP . Sentence5: No, that's all I need for now. Thanks for your help! Sentence6: The booking is for 5 people staying four nights from Saturday . Sentence7: Yes please book that for me. Sentence8: Would you like me to book that now? Sentence9: Thank you. I have another request. I am looking to find out more information on the Soul Tree Night Club. Sentence10: I am looking to stay at the Lovell Lodge hotel and to see the areas local attractions. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User