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. How about TR8730, which would depart at 05:40 and arrive by 08:23? Sentence2: TR8730 has a fare of 60.08 GBP, the trip is 163 minutes, and it departs at 05:40. Would you like to book tickets? Or can I help you with anything else? Sentence3: Great, that's all I need, thanks so much for your help! Have a great day! Sentence4: I have booked that for you, reference number is ZB89D8NC . Do you need anything else? Sentence5: Sounds good. Please, may I have the price, travel time, and departure time? Sentence6: I'll depart anytime as long as I can get to Cambridge by 08:30. Sentence7: I also need to book a train for my trip to Cambridge. Sentence8: Yes, please. I need a reservation for 7 people at 5:15 on Sunday. Sentence9: I will be leaving from Birmingham New Street on Sunday. Sentence10: Where will you be departing from? And what day would you like to travel? Sentence11: Would you like to specify a departure or arrival time? Sentence12: I have 3, the gandhi is a great place. shall I book a table for you? Sentence13: Does Cambridge have an Indian restaurant in the Centre of town? Sentence14: You have a great day as well. If you need anything else, please do not hesitate to call back. Goodbye! Sentence15: I need a cheap one. Sentence16: I have 9 indian restaurants. Do you have a price range in mind? Question: Who has spoken the sentence 15? (A) User (B) System
Output: 


Answer: (B) System