1. A method, comprising: receiving a first message comprising a first key word; receiving a request to display the first message; in response to receiving the request to display the first message, displaying a first part of information associated with the first key word; receiving a trigger associated with the first part of information; in response to receiving the trigger associated with the first part of information, obtaining a second part of information associated with the first key word; outputting a second message based at least in part on the second part of information associated with the first key word; extracting a second key word from the second message; determining whether the second key word matches the first key word; and in response to a determination that the second key word matches the first key word, deleting information associated with the first message.
1. A method, comprising: receiving a first message comprising a first key word; receiving a request to display the first message; in response to receiving the request to display the first message, displaying a first part of information associated with the first key word; receiving a trigger associated with the first part of information; in response to receiving the trigger associated with the first part of information, obtaining a second part of information associated with the first key word; outputting a second message based at least in part on the second part of information associated with the first key word; extracting a second key word from the second message; determining whether the second key word matches the first key word; and in response to a determination that the second key word matches the first key word, deleting information associated with the first message. 21. The method of claim 1 , wherein the transaction with respect to an e-commerce website is associated with an account of a user with respect to an e-commerce website.