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: Nope. That's everything I need today. Sentence2: Okay! What kind of restaurant would you like to dine at? Sentence3: I'm sorry there are no matches. Would you like me to try a different food type? Sentence4: What is the departure time? Sentence5: There are two options for Spanish food in the centre. One is moderately priced while the other is considered cheap. Which would you prefer? Sentence6: I guess I can do Spanish food, try to find something in the Centre area, please. Sentence7: How many tickets do you need? Sentence8: Sure, and what day would you like to travel? Sentence9: I am looking for a restaurant please. Sentence10: One that serves modern American food. Sentence11: it is booked here is your ref number 3OUG57S3 . Sentence12: I'd like the moderately priced one please. Sentence13: I don't need to book it, actually. But how long is the ride? Sentence14: It's a 105 minute ride. Sentence15: The TR7583 leaves at 6:09. Do you want to book it? Sentence16: The train should be on the same day as the restaurant booking and should depart from leicester. Sentence17: Can I get a table for 3 at 11:30 on Thursday? Sentence18: It's called la tasca. I'll need more information if you'd like to book a table. Sentence19: It departs at 06:09. Is there anything else I can help you with? Sentence20: I also looking for a train to Cambridge, arriving by 8:45. Sentence21: Does that arrive before 8:45? Sentence22: Yes, that will work out just fine. thank you Sentence23: yes it arrives at 07:54. is that fine with you? Sentence24: I am glad to help you from Cambridge TownInfo centre. Have a delightful visit. Goodbye. Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System