DialogFlow : how to ask user to spell a word and can we increase the number of "error" before being disconnected?

Question

I've got two basic other questions about DialogFlow and integration with google home / assistant, I didn't find it on my previous researches, but maybe miss it somewhere -really hope not as I do not want to put burden, but one user in google circle insisted me to consider to use stackoverflow for further questions-:

• Can we ask to the user to Spell to Dialogflow some specific words orally? ex: spelling an email to avoid error / password spelling too

• can we increase the number of "errors" when the assistant is collecting wrong answers from the user? (after two wrong attemps it disconnect from the app, I would like to increase this)

Thanks a lot ! and really I hope that my question is not at the wrong place, as the rules seem very stringent per my understanting,

Answer 1

Neither of these features are available in Dialogflow directly, but it is possible to build upon these into your application specifically.

Spell words orally

Trying to spell something is probably not a good user experience, and it may be more useful to Multi-surface conversations so that the user can input this through a smartphone.

However, if you do want to do this, you can have an intent in your webhook which will listen for the user's raw text (app.getRawInput()) and remove all spaces and make smart substitutions ("at" => "@"). I can say letters individually in my email address. It ends up putting a few spaces in there, but in a way that does work more or less.

More Fallback Prompts

If you need to add more leniency for errors, you can track it yourself by replacing the default fallback intent with your own (accepting @sys.any) and providing your own re-prompts.

Keep in mind if the user is getting this error multiple times, then you should probably provide helpful suggestions that get the user back on the right flow. ("I'm sorry, I couldn't understand. Do you want to do X or Y?") After a few iterations of this, it may be better to end the conversation.