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: I would be open to a guesthouse if there are no 3 star hotels. I would like to stay in the moderate price range if possible. Sentence2: I can look that up for you. First, can you tell me the day and time frame you were thinking of travelling? Sentence3: Nope, that was everything, thank you very much! Sentence4: No thanks. Not today. But I could use some help finding a train from Leicester to Cambridge. Sentence5: I'm sorry, but I found no hotels matching your criteria, would you like to look for a cheaper hotel? Sentence6: It needs to leave after 17:45, thanks for checking. Sentence7: Yes, I would like a hotel in the moderate price range with 3 stars. Sentence8: I have bridge guest house. Would you like me to make a reservation,? Sentence9: There are 4 moderately priced guesthouses available. Is there a particular area you would like to stay in? Sentence10: Sure. I'd recommend TR9629 which leaves at 18:09 and arrives at 19:54. The price is 37,80 pounds per ticket. Sentence11: I would like to stay in the south area if possible. Sentence12: Pick one for me and give me the price and arrival time if you don't mind. Sentence13: Just to check, does TR9629 leave on Friday? That's the day I would like to travel. Sentence14: You're welcome. Don't hesitate to ask if there's ever anything else we can help you with. Sentence15: I am looking for a moderately priced 3 star hotel to stay in in Cambridge. Sentence16: There are 42 trains that leave after 17:45. Sentence17: Yes, TR9629 leaves on Friday. Can I help you with anything else? Sentence18: Unfortunately, i have no matches for your request. Would you like for me to search all hotels in cambridge. Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System