You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Example Input: Sentence1: The phone number is 01223420060 and the post code is cb46az. Sentence2: Ok. I booked four tickets for you. Your reference number is FRSZ5A8R . Can I help you with something else? Sentence3: Yes. Book for 4 people. Sentence4: I would like the phone number and postcode for it please. Sentence5: What information are you looking for? Sentence6: Sounds great, before i let you go, I just want to make sure we have covered everything that you need. Sentence7: yes you did Sentence8: TR6806 will leave at 10:01 and arrive at 11:01. The trip will take 60 minutes and it will cost 17.90 pounds. Would you like to book? Sentence9: Thank you! That's all I needed, thanks so much. Sentence10: enjoy your stay in Cambridge! Sentence11: I'm going from cambridge to broxbourne any time after 09:15. Sentence12: I show 404 rail departures on Thursday, can I get something specific for you? Sentence13: I want a train leaving on thursday. Sentence14: Im also looking for a place by the name of milton county park. Question: Who has spoken the sentence 4? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: i'm sorry, i was unable to find a different hotel that matches your criteria and the availability that you wanted. Sentence2: Good day, thank you for using us, if you need anything else let is know. Sentence3: Yes, I'm looking for an expensive hotel to stay at, can you help me? Sentence4: Is there a specific side of town you'd like to be on? Sentence5: Yes. I would like to stay at University Arms for 2 people, for 2 nights, starting from Friday. Sentence6: Booking was unsuccessful. Would you like to find another hotel? Sentence7: That's too bad. Would you be able to find me a different hotel in the same price range? Sentence8: Are both hotels or are they guest houses? Sentence9: Hold on, I forgot about the Gonville Hotel I mentioned earlier. I got you a room. Your reference number is : B01G0B4W. Can I do anything else? Sentence10: Thats disappointing,thank you andgoodbye. Sentence11: Yes, I would like to stay in the city centre. Also, I would need free parking. Sentence12: That is all. Thank you. Sentence13: You have the Gonville Hotel or the University Arms to choose from. The Gonville is a 3 star hotel while the University Arms is 4 star. Sentence14: They are both hotels. Would you like for me to book one of these hotels for you? Question: Who has spoken the sentence 6? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Okay have a great rest of your day! Sentence2: I also need a place to stay. Sentence3: No thank you. Sentence4: The lensfield hotel is an expensive hotel in the south. The address for it is 53-57 lensfield road. What day would you like to book the room for? Sentence5: Eggrolls! They're good too - do you have any listings for Chinese restaurants? Sentence6: Unfortunately, there are not any expensive scandinavian restaurants in the area. How about another type of cuisine? Sentence7: I found one named 'the good luck chinese food takeaway' located on 82 Cherry Hinton Road Cherry Hinton. Sentence8: I've found four different hotels in the south, all of which have free wifi and parking. Would you like it o be cheap, moderately priced, or expensive? Sentence9: Your reference number is QA74KS8I . Have a good day. Sentence10: I would like the reservation for Tuesday please. Sentence11: Something in the same range as the hotel please. Sentence12: I don't need to book it. Thanks for the help. Sentence13: yes i would like scandinavian food Sentence14: No problem at all! Is there anything else I can help you with today? Sentence15: I would be happy to help you with that! Can you specify what area you would like to stay in? Sentence16: I am hoping to find an expensive place to dine out while I am visiting. Sentence17: Yes, I would like a table there at 11:15. We will have 8 people. I'll need the reference number. Sentence18: I'd like to be in the same area as the restaurant that we booked please. Sentence19: We have quite a few options available to you. Is there a particular cuisine you are interested in? Sentence20: It is, as a matter of fact. Would you like a table there? Sentence21: If the restaurant is a 3 star rating I will take it. Can I have the address and hotel type please? Sentence22: For what day will this be for? Sentence23: Is it in the south? I need one that's in the south. Sentence24: The lensfield hotel is in the expensive price range, would you like to book a room there? Question: Who has spoken the sentence 9? (A) User (B) System
Example Output:
Answer: (B) System