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 you can choose one for me. Sentence2: I am also looking for a place to stay. The hotel should be in the type of guesthouse and should have a star of 4. Sentence3: Thank you goodbye Sentence4: We have many to choose from, would you like a recommendation? or is there something specific you want? Sentence5: booking was successful, the total fee is 10.56 GBP payable at the station .Reference number is : QSAS4UNL . what else can i do for you Sentence6: Okay. Your booking was successful! Your reference number is JVTIZ6EI . Can I help with anything else today? Sentence7: No, I don't need to leave by a particular time. I want to arrive by 12:15 though. Sentence8: I'm leaving Ely and want to be in Cambridge by 12:15. Sentence9: Ok, I recommend Alexander Bed and Breakfast, it's a cheap 4-star hotel in the centre, would you like me to make reservations for you? Sentence10: Yes please, 4 people for 5 nights on saturday. Sentence11: I am getting the train schedule on my computer as we speak, where will you be coming from and what time? Sentence12: Yes, it would. Please make a booking for 3 people and provide the reference number. I will also need a place to stay. Sentence13: TR3052 will arrive at 11:52, would that work for you? Sentence14: Happy to be of help, and enjoy your stay in Cambridge! Sentence15: We have four trains arriving by 12:15. Is there any particular time you would like to leave by? Sentence16: I am looking for a train to cambridge that leaves on Saturday. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User