Linda was asking people if they have air mattresses.

After Dan said he could provide some Linda excitedly said "Oh, that's so nice. I am glad I came into this room", and continued "who else could I ask?"

As soon as she said this, Sam Leach entered and said as he passed by Linda "You asked me that already". Linda seemed almost symphathetic at this moment since she didn't even say anything, but I could also understand why Sam had to do that... you know.