Hanging up a suit in coach

I'm soon going to be taking a cross-country trip, from the west coast
to the east coast, a six-hour trip. I'm flying in coach on American on
a 757, out on a red eye and back in late afternoon. I'm going for a job
interview at a conference and I'm taking a suit. What I want to know is:
can I get a flight attendant to hang up my suit? In the past, on some
flights, some flight attendants have done that. At other times, I've had
to stuff it in the overhead compartment,which is hardly what I need
before an interview. Is there a place in coach on a 757 to hang
passenger clothes? Is there a strategy to get to use it? Thanks.