We ran into an issue playing a mission and didn't know the immediate answer. If you start to talk with a character and then are prompted with a selection which requires you to spend an action and then continuing that conversation takes another action but you don't have any left, are you forced to cancel out? Additionally what do you do in such a situation where you don't have an action to spend but there is no option to cancel out and you are forced to spend an action you do not have? We might have been missing something here.

If you don't have the action to spend, you need to abort the dialogue (you can resume it with another investigator or in the next turn)

If you're resolving a dialogue there's an option asking you to spend an action, but there's no way to exit that dialogue otherwise, then it's a bug; in case, please post in the "bug" pinned thread on this very board

Great thanks. I'll make a note to write it down next time to report.