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: thank you! Do you have the phone number for that restaurant? Sentence2: Thank you goodbye Sentence3: Is that all you needed today? Sentence4: Hello, the nirala is an indian restaurant in the north area. It is moderately priced. Sentence5: Yes. The phone number is 01223360966. Can I help you with anything else? Sentence6: Yes, I need a train from cambridge and going to norwich. Sentence7: Thats it, thanks Sentence8: TR1036 will arrive at 15:55. Would you like to book passage on that train? Sentence9: The option arriving at 15:55 would cost 14.08 pounds and the travel time is 79 minutes. Sentence10: There are 133 trains, do you have a day and time you'd like to travel? Sentence11: Not yet I need information on travel time and the price. Sentence12: Yes, I would like to leave on Sunday and arrive by 16:45. Sentence13: Hi! My friends told me about a restaurant called the nirala. What can you tell me about it? Sentence14: Thank you. Good day. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User