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: No, that will be all. Thanks for all of your help! Sentence2: I'm leaving cambridge on wednesday and going to stevenage. Sentence3: Hmm, do they have internet? Sentence4: Yes, the El Shaddai has a 0 star rating and falls in the cheap price range. They're located in the city centre as well. Would you like to book a room? Sentence5: Booking was successful, the total fee is 76.8 GBP payable at the station Reference number is : 4OCMA9VI . Sentence6: Do either of those have a 0 star rating and are in a cheap price range? Sentence7: Sure. Their postcode is cb11eg. I can book a room for you if you would like? Sentence8: I need it to leave after 08:30. Sentence9: Yes, both have internet and parking. Sentence10: Can I have the postcode for that one please? Sentence11: Yes, I am hoping to stay in the centre. Sentence12: There are 24 guesthouses across the city. Is there a certain part of town where you would like to stay? Sentence13: Is there anything else you need today? Sentence14: TR8913 will leave at 09:21, would that work for you? Sentence15: There are two options. Alexander Bed and Breakfast and El Shaddai. Would you like a reservation at one of these two choices? Sentence16: You're welcome. Enjoy your trip! Sentence17: That sounds perfect. Can you make a booking for me for 6? Sentence18: I'm not sure if I'm ready to book, but I'd like to also find a train if I can please. Sentence19: Ok, the first train from cambridge to stevenage leave at 05:21, there is a train every two hours until 23:21, any time preference? Sentence20: Okay, thanks a lot. Sentence21: I am going to be visiting and need a guesthouse. Sentence22: I have over 2,800 listings for train departures. Where are you looking to go? And when? Question: Who has spoken the sentence 17? (A) User (B) System
Output: 


Answer: (B) System