(in Paris) insists on you having a good afternoon

Before doing anything else. Conversation was as follows, I'm in green, la French girl is in bleu:

"Vous parlez anglais?" - to see if she spoke French (terrible French accent on my part)

"Oui. Yes. Good afternoon" - in fairness, even worse French accent on her part

"Hi, I'd like ..."

"Good afternoon"

"Uh, I'm looking for ..."

"Good afternoon"

"Yes, the gate for flight ..."

"GOOD AFTERNOON!"

"Ah. Good afternoon. " (understanding dawned)

Conversation rolled normally on from there. One should also note that the entire time, she did not look as though she meant it.