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 was able to make the booking. Reference number is : MNL7UFXJ . Sentence2: Absolutely we have 79 attractions, do you have a type? Sentence3: I have booked your taxi. Be expecting a yellow BMW. Please call 07643657212 should you need to reach them. Sentence4: Yes, that would be fine. Something in the west would be great. Sentence5: What about in the center? Sentence6: The postcode is cb11ps and the attraction type is cinema. Sentence7: Yes, please. I need to book it for 2 people and 4 nights starting from Friday. Sentence8: Thank You!, I will need to book a taxi that can depart by 12:30, please provide me with contact and the type of car. Sentence9: Have a great time. Sentence10: Hi there. I am excited about seeing some local tourist attractions. Can you help me find a place to stay while I am there? Sentence11: You're welcome. Sentence12: thanks alot for yor help. that is all for today Sentence13: Yes I found one guesthouse called el shaddai. Would you like to book a room? Sentence14: I'm sorry there are not any matches for what you are looking for. How about a guesthouse instead of a hotel? Sentence15: I will, thanks! You have a great day to. Bye. Sentence16: That will be fine. I'll need the postcode and attraction type? Sentence17: I'm sorry, but there is nothing with 0 stars in the west. Sentence18: Seventy-nine, wow this is going to be so much fun! Anyway I need a 0 star hotel with free parking. Sentence19: Thank you. I am also looking for a place to go in town. I would prefer something near the hotel. Sentence20: I highly suggest the Vue Cinema. Would you like more information? Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System