Why won't my Booking Details show in my Email Templates?

Why won't my Booking Details show in my Email Templates?

Hi

I'm putting together a confirmation email template which tells my customer exactly what they've ordered it and when it will be delivered etc...

However, I am struggling to get the template to pull certain information when going through the automations. The contact first-name code -  ${Lookup:Contact Name.First Name} - is putting in their whole name instead of just their first, and we cant figure out why.

Any help would be greatly appreciated

Dale