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, you're all set! I have it booked for Sunday, 18:00, and for 2 people. Your reference number is LR4G3953 . Is there anything else I can help with? Sentence2: What does Cambridge offer so far as expensive, German restaurants? Sentence3: You are welcome. Are you certain I can't help with a hotel or a train for you? Sentence4: Thank you for calling and have a great trip to Cambridge. Goodbye. Sentence5: That is all I needed. Thank you! Sentence6: Yes, actually, I'm looking for a train. I'll need to depart from Cambridge after 20:00. Sentence7: I'm terrible at math. What time does that arrive? Sentence8: i want to travel on sunday. i need to leave cambridge at 20:00. Sentence9: Is there any asian oriental restaurants in the north area? Sentence10: There's no restaurants meeting your criteria. Would you like to change anything parameters? Sentence11: Would you like to search for something else? Sentence12: I am going to Ely on Sunday. Sentence13: TR0537 leaves at 21:50 and arrives in 17 minutes. Do you want tickets for that? Sentence14: Yes, there is one called Saigon City. Would you like more information? Sentence15: Thank you for all your help. Have a great day. Sentence16: We have lots of those! Where are you traveling to? Sentence17: The arrival time is 22:07. Sentence18: I would like you to book it. 2 people 18:00 on Sunday. Sentence19: Oh really? I was hoping to eat expensive German cuisine in the northern part of town. Sentence20: What day will you be taking the train? Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User