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: Great. Thank you. I'm also looking for a moderately priced, 4 star hotel. Sentence2: Where are you leaving from? And what day do you need to leave? Sentence3: We have three trains arriving by 10:30. What time would you like to leave? Sentence4: I would say you should leave by 09:35 Sentence5: There are 11 choices. Picking an area of town will help to narrow it down. Sentence6: Unfortunately there aren't any hotels that match that criteria. They are all guesthouses. Sentence7: What time would I need to leave in order to arrive by 10:30? Sentence8: I need to get to Cambridge by 10:30, is it possible to do that by train? Sentence9: Booking was successful for the a and b guest house. Your reference number is : 1HPJ1F1W . Do you require any further assistance? Sentence10: I'll be leaving from Ely on Monday. Sentence11: There are many to choose from. Do you have a preferred area? Sentence12: TR2987, fare is 4.40 pounds and your trip will be 17 minutes. Sentence13: I don't have a preferred area, but I am looking for a hotel, not a guesthouse. Does that narrow it down? Sentence14: no that will be all thanks so much. Sentence15: Is there anything else? Sentence16: Not, that is all I will need today. Thanks. Sentence17: Ok can i get the train ID and price? Sentence18: Ok, a guesthouse will have to do. How many choices do I have? Sentence19: You're very welcome. Have a good day. Sentence20: Please pick the best option. I need a room for 8, for two nights and starting Monday. Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User