Je vous ai vu dans mon rêve :)
Dream land is "un pays de rêve" in French.
Beau Rêve = Beautiful Dream
'le rêve'
mon rêve
notre rêve
rêver un petit rêve.
It is spelled songe. saw(n)zh is as close as I can do here.
if you mean say, bonjour means hello in french.
"let me dream" is "laisse-moi rêver" in French ; ("laissez-moi rêver" when addressing several persons)
tu es mon rêve
Vis ton rêve.
je rêverai de toi