A method implemented by one or more processors, comprising: in a dialog session between a user and an automated assistant implemented by one or more of the processors: receiving a first query (370, 480A, 580A1) from the user as part of the dialog session, the first query being based on first spoken user interface input generated by a user via a user interface input device, and the first query being directed to the automated assistant as part of the dialog session; determining (752, 754), at a first time, either that no resources are responsive to the first query, or that there are multiple resources that are responsive to the first query but none satisfy one or more criteria; based on determining either that no resources are responsive to the first query, or that there are multiple resources that are responsive to the first query but none satisfy the one or more criteria: monitoring for presence of a given resource that is responsive to the first query and that satisfies the one or more criteria, the given resource being in addition to any resources that are responsive to the first query at the first time; and as part of a subsequent dialog session between the user and the automated assistant, the subsequent dialog session at a second time subsequent to the first time: receiving second spoken user interface input (480A, 680A) provided by the user via a computing device; providing, as output from the automated assistant and for audible presentation to the user via a speaker of the computing device, a responsive reply (482B1, 682A) to the second spoken user interface input; and based on determining the presence of the given resource, and immediately following the responsive reply, providing, for audible presentation to the user via the speaker and as output from the automated assistant, content (482B2, 682B) that is based on the given resource that is responsive to the query and that satisfies the one or more criteria, wherein the content is not responsive to the second spoken user interface input. in a dialog session between a user and an automated assistant implemented by one or more of the processors: receiving a first query (370, 480A, 580A1) from the user as part of the dialog session, the first query being based on first spoken user interface input generated by a user via a user interface input device, and the first query being directed to the automated assistant as part of the dialog session; determining (752, 754), at a first time, either that no resources are responsive to the first query, or that there are multiple resources that are responsive to the first query but none satisfy one or more criteria; based on determining either that no resources are responsive to the first query, or that there are multiple resources that are responsive to the first query but none satisfy the one or more criteria: monitoring for presence of a given resource that is responsive to the first query and that satisfies the one or more criteria, the given resource being in addition to any resources that are responsive to the first query at the first time; and receiving a first query (370, 480A, 580A1) from the user as part of the dialog session, the first query being based on first spoken user interface input generated by a user via a user interface input device, and the first query being directed to the automated assistant as part of the dialog session; determining (752, 754), at a first time, either that no resources are responsive to the first query, or that there are multiple resources that are responsive to the first query but none satisfy one or more criteria; based on determining either that no resources are responsive to the first query, or that there are multiple resources that are responsive to the first query but none satisfy the one or more criteria: monitoring for presence of a given resource that is responsive to the first query and that satisfies the one or more criteria, the given resource being in addition to any resources that are responsive to the first query at the first time; and as part of a subsequent dialog session between the user and the automated assistant, the subsequent dialog session at a second time subsequent to the first time: receiving second spoken user interface input (480A, 680A) provided by the user via a computing device; providing, as output from the automated assistant and for audible presentation to the user via a speaker of the computing device, a responsive reply (482B1, 682A) to the second spoken user interface input; and based on determining the presence of the given resource, and immediately following the responsive reply, providing, for audible presentation to the user via the speaker and as output from the automated assistant, content (482B2, 682B) that is based on the given resource that is responsive to the query and that satisfies the one or more criteria, wherein the content is not responsive to the second spoken user interface input. receiving second spoken user interface input (480A, 680A) provided by the user via a computing device; providing, as output from the automated assistant and for audible presentation to the user via a speaker of the computing device, a responsive reply (482B1, 682A) to the second spoken user interface input; and based on determining the presence of the given resource, and immediately following the responsive reply, providing, for audible presentation to the user via the speaker and as output from the automated assistant, content (482B2, 682B) that is based on the given resource that is responsive to the query and that satisfies the one or more criteria, wherein the content is not responsive to the second spoken user interface input.