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: okay. cheap is good Sentence2: There are no zero star expensive ones. The low quality ones tend to be on the cheaper end. Would you like me to look? Sentence3: Yes, that would be great. I'll need it booked for 3 nights, 8 people, starting on Sunday. Sentence4: Is there a 0-star place that's also expensive? I'm sort of a glutton for punishment. Sentence5: Thank you, goodbye. Sentence6: Okay, how about The Gardenia that serves mediterranean food? Sentence7: We have 2 cheap guesthouses in the center of town. I recommend the Alexander B&B. Sentence8: Thanks. Can you help me find a guesthouse in the same area? Sentence9: Booking was successful. Reference number is : 8I2TLR4V . Anything else I can help you with? Sentence10: They are a cheap mediterranean place in the centre of town. They are located at 2 Rose Crescent City Centre. Their phone number is 01223356354. Sentence11: Any particular cuisine you'd prefer? Sentence12: I have a cheap guest house in the center, 0 stars. El Shaddai. Shall I book it for you? Sentence13: naw, i'm good thanks Sentence14: Actually, I love trying new things. Im open to new things. What is available? Sentence15: No, that's all I needed today. Thanks for your help! Sentence16: Can you give me more information on the Gardenia? Don't forget the phone number, please. Sentence17: If you need any thing else, let us know. Sentence18: I'm looking for a cheap reastaurant in the centre. Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System