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 reserved a room for you with reference number AOYFLXPT . Is there anything else I can help you with today? Sentence2: Okay, when do you want to leave the hotel? When do you want to arrive at the restaurant? Sentence3: Yes they are. Still on the north side, woudl to liek me to book you or give you their contact info? Sentence4: I want to go from the Alpha-Milton to Bangkok City by 14:15. Sentence5: Thank you. I also need a taxi to get between the two. Sentence6: I am also looking for thai food in centre please. Sentence7: Great. Can you reserve a room for me for Thursday? There will be 2 of us and we would like to stay for 2 nights. Sentence8: No, that's all I need. Thank you for your help. Sentence9: sure, just to clarify: do you need a taxi to take you from the hotel to the restaurant? or vice versa? Sentence10: I can reserve at the restaurant named Bangkok City Sentence11: Glad you chose us, enjoy your day. Sentence12: i need to get from the hotel to the restaurant Sentence13: Okay please book a table for the same group of people at 14:15 on the same day. Sentence14: I reserved a grey Ford for you. The contact number is 07711417288. Can I help you with anything else? Sentence15: Is the alpha-milton guest house still in operation? Sentence16: I have made those reservations and your reference number is S7RZRH3P . Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User