Heard in a travel agency: chapter one

Last week we received one of the.... erm.... weirdest petitions ever. We are used to being requested strange seats requests, but never like this. A passenger was flying from Europe to Asia. In economy, to be more precise and his PA sent us the following email:  

Please mind the following seat requirements: 

 

"Please, book my seat. The aircraft is A340-600, but there are two different types, depending on the type, please book according to the following preferences: 

 

When the aircraft is A340-600 (8F/60C/238M) (Airbus) then, please book the following: 

Priority 1: 38G

Priority 2: 40D

Priority 3: 41C or 58D or 58G

Priority: 58C or 41H or 58H

 

Being A340-600 (8F/56C/229M) please book one of the following :

Priority 1: 37G

Priority 2: 40D

Priority 3: 40C or 57D or 57G

Priority 4: 58C or 40H or 58H "

We were astonished. What would have happened if neither of the seats is available. Would he refuse tor travel?