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: Sounds great. I'd like to make a reservation for Saturday. Sentence2: Thank you for calling. Please let us know if we can be of assistance in the future. Have a great trip! Goodbye. Sentence3: I would also like a moderately priced place to stay. Sentence4: free wifi and 4 stars please Sentence5: May I please have information about a train to Stevenage, leaving on Tuesday? Sentence6: Yes, please. Sentence7: Your booking was successful. The reference number is 5KPWKTTX . Can I help with anything else today? Sentence8: Do you have a certain time you would like to leave after or arrive by? Sentence9: Certainly. Is Cambridge your departure point? Sentence10: Any that leave after 08:00 would be fine. I'll need a booking for 5 people, please. Sentence11: You are booked for the TR4546 train. Your reference number is NALGEDH3 and 64 GPB will be due at the station. Is there anything else? Sentence12: Is there a certain area that you perfer? Maybe free parking or wifi? Sentence13: I would be happy to book this for you. Will you be booking for 5 people? Sentence14: I have the guesthouse called Avalon available. It has 4 stars and is moderately priced. It's in the north. Would you like me to book this? Sentence15: Yes for 5 people and 3 nights. Sentence16: No, thank you, that's all I need. Thanks for your help! Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System