Given the task definition and input, reply with output. You are given a conversation between two people. 'Person1:' and 'Person2:' are used to separate their respective dialogues. Your task is to label each of the continuous conversations done by one speaker with the emotion detected in that particular part. Your labels can be one among the following: 'No emotion', 'surprise', 'happiness', 'sadness', 'anger', 'disgust'.

Person1: Mary didn't pass the final exam in physics .
Person2: She must be very sad .
Person1: Her parents scolded her severely and she's very depressed now .
Person2: At a time like this , what she needs is a pat on the back rather than a blame .
No emotion,No emotion,No emotion,No emotion