Doctor gave boy no parting words when travelling (3,6)

I believe the answer is:

bon voyage

I'm a little stuck... Click here to teach me more about this clue!

'parting words when travelling' is the definition.
I know that 'travelling' relates to this answer.

'doctor gave boy no' is the wordplay.
'doctor' indicates anagramming the letters.
'gave'+'boy'+'no'='gaveboyno'
'gaveboyno' anagrammed gives 'BON VOYAGE'.

Can you help me to learn more?

(Other definitions for bon voyage that I've seen before include "Have a nice cruise, monsieur" , "travel well!" , "Have a good journey - at sea" , "Have a good trip - on the briny" .)

I've seen this clue in The Guardian.

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