A Canned Response is used to answer a customer. It is a collection of commonly used answers used as standard responses to customers' queries. Generally, these are used so that time is not wasted repeatedly typing out the same answers.
These canned responses are kept ready to send out whenever a standard question or a common question comes up frequently.
Steps to create a new Canned Response:
Go to Settings > Canned Responses.
Click on Add new canned response.
Fill in the details and save the changes.