Provided is a technique for easily using a dialogue service that reduces an effect of a change in a task of the dialogue service and provides a plurality of tasks. In the dialogue method, a computer including a processor and a memory executes a dialogue. The dialogue method includes: a text input step in which the computer receives text; a task execution step in which the computer causes the text to be separately executed by a plurality of types of tasks; an execution result obtaining step in which the computer separately obtains execution results from the plurality of types of tasks; a task selection step in which the computer selects one of the obtained execution results; and a response output step in which the computer outputs the selected execution result as an answer to the text.