Using in-battle macros

1LT_Dwayne: I noticed that sometimes when I ask a specific player by using the macro "I need help" they reply instantly "alright" or something similar. It looks strange because in the heat of the battle I don't thing someone can reply that fast especially with the number of times it happens. Seems to be an auto response. Is there something I don't know here? I know there is a key to reply directly without having to select the type of macro you want but still look strange how fast they reply.