I wanted to know whether it is possible to link to other dialogues when the user acts in a certain way.
For example, if the user wants to purchase a type of product, send him to the dialogue built for that product. I cannot seem to find any option to link to other dialogues
I don't think you can request/call other dialogue flows from a dialogue just yet. You'd need to create the product-specific flow in your original dialogue itself.
Do you have any suggestion on how to implement this, instead of having very deep and hard to handle trees. I was thinking send link to the product page and have a trigger there for another dialogue to start
Yes, I think that'd be the way to go! You can also use a goal card in your chat dialogue to log the milestone activity when a person reaches the point where-in they're presented with the link to navigate to the respective product-specific page.