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: What day did you want to check in? Sentence2: Yes. There will be six of us staying for two nights. Sentence3: There are many guesthouses that meet your criteria. Do you have a pricerange in mind? Sentence4: Thank you as well, let us know if you need help with anything else. Sentence5: I am looking for a place to stay. The hotel should be in the type of guesthouse and doesn't need to include internet Sentence6: I was able to book the Bridge Guest House for 6 people starting Tuesday for 2 nights. Is there anything else I can help you with? Sentence7: Yes the bridge guest house has free wifi. Can I book it for you? Sentence8: I have located 15 guesthouse types in the moderate price range. Do you have a preference for a particular area of town? Sentence9: I don't care about that. Sentence10: We have two in the south, a 4 star and a 3 star. Do you have a preference? Sentence11: I'm looking for something that would be in the middle price point. Sentence12: Does it have free wifi? Sentence13: We are actually checking in starting on Tuesday. Sentence14: Nope, that's all I need for today. Thank you! Sentence15: Maybe the south? Sentence16: Of course. Reference number COIMDB7B . Can I help with anything else today? Sentence17: How about the bridge guest house? Sentence18: Yes, can i have a reference number please? Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User