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: Do you have a time you want to leave or get there by? Sentence2: 9:21 works perfectly, can I have a reference number for that as well? Sentence3: In what area will you need the room? Sentence4: Hi, can you help me find a cheap hotel with free wifi? Thank you Sentence5: I would like a cheap 4 star guesthouse with free wifi instead. Sentence6: Autumn House is a cheap 4 star guesthouse with free wifi in the East. Would you like me to make a reservation for you? Sentence7: Fell free to call if you need anything in the cause of the day. Sentence8: The Cambridge Belfry is a cheap hotel in the west with wifi, would that be okay? Sentence9: There area does not matter, but I prefer a four star guesthouse. Sentence10: Your booking was successful! Your reference number is 7IWUZFNC . Can I assist you with anything else? Sentence11: Your Reference number is : CZEKL8AL . It will cost 12.8 GBP. Sentence12: That is all I need good bye. Sentence13: I would like to arrive by 11:00. Sentence14: Yes I also need a train. I'm planning to travel from Cambridge to Stevenage on Friday. Sentence15: There are 3 trains that will arrive by 11:00. Would you prefer to leave at 05:21, 07:21 or 09:21? Sentence16: Please for 7 people for 3 nights starting on Tuesday/ Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User