给定一段英文对话，将其中每个说话者所说的话分别输出。
A: "Hi, how are you doing?" 
B: "I'm doing well, thank you. How about you?" 
A: "I'm pretty good too. Thanks for asking."
Person A:  "Hi, how are you doing?"
Person B:  "I'm doing well, thank you. How about you?"
Person A:  "I'm pretty good too. Thanks for asking."