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: Yes, please. I only need one ticket. Sentence2: I am leaving Peterborough on Sunday and I need to arrive by 10:15. Sentence3: Thank you for contacting us and have a nice day. Sentence4: I want to keep it in the moderate range please Sentence5: The bridge guesthouse is in the south with 3 stars. They have internet and parking. Would you like me to make a reservation for you? Sentence6: I need to arrive by 10:15. Sentence7: Sure there phone number is 01223247942. Is there anything else I can help you with today? Sentence8: Sure, I would recommend the Aylesbray Lodge guesthouse. It is 4 stars, includes wifi, parking and is in the moderate range. Would you like me to book it? Sentence9: Booking was successful, the total fee is 13.2 GBP payable at the station . Reference number is : 676ITDRH . Can I help with anything else today? Sentence10: You sure can! Where will you be traveling from, and on what day? Sentence11: I actually want a hotel with 3 stars if possible Sentence12: No, that's all. good bye. Sentence13: When do you want to arrive by? Sentence14: Can I catch a train to Cambridge? Sentence15: Yes, I am going to need a place to stay while I'm in town.Can you recommend a guesthouse in the south? Sentence16: TR0774 arrives closest to that time, it will arrive by 10:09. Would you like to book a seat? Sentence17: Can I please have their phone number? Sentence18: What price range would you like? Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System