Yup, free text should be fine... Last one i sent was as below, minus the details
Message ID: 281424
PLEASE CAN YOU ARRANGE THE FOLLOWING OVERFLIGHTS ON OUR BEHALF:
LAD-NBO
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DROC O/FLT
BURUNDI O/FLT
RWANDA O/FLT
TANZANIA O/FLT
A/C TYPE :
A/C REG :
OWNER/OPRTR :
CALLSIGN :
ROUTING : LUANDA/NAIROBI
SCHEDULE : ED LAD 02MAY 1245Z EA NBO 02MAY 1645Z
CARGO LOAD : LAD TO NBO NIL LOAD FERRY SECTOR