Postcard sent by man who should have been on the Titanic

This postcard was sent to Miss M. Liesse by a one F. Liesse. The handwriting looks like a man's, but it could have been sent by a maid who travelled with her employers in London, Paris, Baden...) The text at the back of the card reads:

London, 21 April 1912
I have been back in London for a few weeks. I'll be in Paris next week for 3 or 4 days. I must be in Baden about 27 April. I'll send you a line when I arrive. I sent a word to Chatigny. I hope you still are in good health.
Best wishes for your health.
Yours,
F. Liesse
I have been asked to travel on this ship, and I was right to refuse

No one knows in what quality F. Liesse was asked to undertake a trip on 'this ship' and why he or she refused. Another name in the 'I-should-have-been-on-board-the-Titanic-but-was-not-for-some-reason" list.