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: That would be just fine. Can you make reservations for 5 people at 18:00 on wednesday. Sentence2: I was able to book your table for your per your request. The Reference number is : UZ2TEM53 . Is there anything else you need? Sentence3: I am also looking for a train to Cambridge Sentence4: You're very welcome! Have a great day! Sentence5: Yes thats perfect book that for the same group of people please. Sentence6: Thanks for all your help! Goodbye! Sentence7: I'll be traveling from Ely to Cambridge on Wednesday. I need to get to Cambridge before noon. Sentence8: perfect. i have booked and the reference number is WMH7ZZ71 .is there anything else i can help? Sentence9: Can you check for Chinese? I haven't had Chinese in awhile. Sentence10: I'm sorry I have no steakhouses that are moderately priced. is there any other cuisine you might like to try? Sentence11: I have 3 moderately priced Chinese restaurants. I would recommend the Jinling Noodle Bar. Sentence12: thank you that will be all,that was a big help too Sentence13: What sort of moderately priced restaurants does Cambridge offer? I'm only interested in restaurants located in the Centre. Sentence14: Okay, how about TR2006? It leaves ely at 11:35 and arrives in cambridge at 11:52. Sentence15: Thank you. That is all that I need. Sentence16: Sure, where will you be departing from? Also what date and time were you looking to travel? Sentence17: I am looking to eat at a steakhouse. Sentence18: There are quite a few including British,Asian,Italian and many more. Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System