AutoIt script wanted with buttons, to paste canned replies into mails

In Outlook 365 web mail I want to reply to customer emails by simply clicking a button. We currently have have 10 generic responses we use based on the customer query. Operation: 1. Webmail client is open 2. AutoIt dialog box with 10 buttons is open. The buttons have the short description of the reply as the title. 3. User selects and reads email to determine appropriate response in webmail 4. User clicks one of 10 buttons in dialog box 5. AutoIt sets focus on webmail screen. 6. AutoIt sends the 'r' key (the shortcut key to reply to an email) 7. AutoIt sends the appropriate text 8. AutoIt sends the 'alt-s' key (the shortcut key to send)