What would u reply to this? (guys n girls)?

Pls help I am runnin out of ideas on how to help my little sis....ok she's 25 not so little ha ha

a guy she's met online on some forum started mailin her n they became really friendly. They email each other all the time but he lives on the other side of the country.

yesterday he emails her askin whats the best way to get to the city she's at and whats the quickest.

my sis has a bit of a strange sense of humour n replied....i dunno.why? who's travelling?

this morning he replies back....i was just wondering, no need to panic i'm not that desperate!!!!

now she's pissed off n complainin to me but I dunno wat she should tell the guy....i would jus copy n paste a sermon on makin assumptions...any ideas???