Lady conducting tour collapsed! Don’t worry about it (2,7)
I believe the answer is:
no trouble
'lady conducting tour collapsed don't worry about it' is the definition.
I can't tell whether this defines the answer.
'tour collapsed don't worry about it' is the wordplay.
'collapsed' indicates an anagram.
'don't worry' becomes 'noble' (I can't justify this - if you can you should believe this answer much more).
'about it' indicates putting letters inside.
'tour' is an anagram of 'trou'.
'trou' going inside 'noble' is 'NO TROUBLE'.
Can you help me to learn more?
(Another definition for no trouble that I've seen is " Problem-free".)