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: We have 19 trains that day starting at 5:16 and going by the hour, any preferred time range? Sentence2: Sure that sounds good can get a booking for 6 people at 11:30 on sunday. Sentence3: Charlie Chan is a good one. Would you like me to book it? Sentence4: Where will you travel to and from? Sentence5: Thanks for taking care of everything so quickly. Have a great afternoon! Bye. Sentence6: There is a train leaving at 6:16. Would you like me to book that for you? Sentence7: Charlie Chan is in the Centre. How about the lucky star? It's in the south. Sentence8: I'll be travelling from norwich to cambridge. Sentence9: There are six of us. Sentence10: i have train tr4202 that will arrive in cambridge by 08:35. how many tickets do you need? Sentence11: Your welcome. I am glad I was able to help. Sentence12: Is that one in the south? That's the area I'll be in. Sentence13: Thanks. I also need train tickets for Sunday. Sentence14: Anytime after 6 would be good thank you Sentence15: Ok. I have a table for 6 booked at 11:30 Sunday. The reference number is A57HXG6M . They will hold the table for 15 minutes. Sentence16: I need to be in Cambridge by 8:45. Can you book a train for that will arrive close to 8:45? Thanks. Sentence17: Booking was successful, the total fee is 84.48 GBP payable at the station .Reference number is : WPGYOY1Y . Sentence18: Hey any ideals for a cheap chines restaurant ? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System