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: You are welcome. Goodbye. Sentence2: Your reference number is BIBMWTH4 . Is there anything else you need today? Sentence3: Nusha is an entertainment venue on the south side of town. Would you like their address and/or contact information? Sentence4: I'm leaving on Tuesday anytime after 14:45 and I'm coming from Ely. Sentence5: Yes, that is all I need right now. Thank you! Sentence6: What is the travel time, and what time will it arrive at? Sentence7: no that's all thank you Sentence8: Sure! Where are you coming from, what day are you coming, and what time do you want to get here? Sentence9: Hi there, I've heard of something fun to do in the city called Nusha but I'm not sure where it is. Can you help me figure out how to get there? Sentence10: Oh, wait, can you help me find a train to Cambridge? Sentence11: Yes and I need the reference number Sentence12: Ok. Have a good day! Sentence13: No, I am familiar with the south side. Thanks for your help. That is all I really need to know. Bye. Sentence14: TR9420 will leave at 15:35 if that works for you. Sentence15: I hope you enjoy your trip. Are you sure you have everything you need? Sentence16: Arrival at 15:32 and your travel time is only 17 minutes. Would you like me to get the tickets for you? Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User