Airfare Watchdog web scrape

scrape_fares.py

import mechanize
from BeautifulSoup import BeautifulSoup

URL = "http://www.airfarewatchdog.com/"

def input_destination(dest):
    br = mechanize.Browser()
    br.open(URL)
    formcount = 0
    for form in br.forms():
        if str(form.attrs['id']) == 'fares_search_fromto_form':
            break
        formcount += 1
    br.select_form(nr=formcount)
    br["city_dep"] = dest
    return br.submit().read()

def scrape_results(form_data):
    soup = BeautifulSoup(form_data)
    result = soup.findAll("tr", {"class": ["o", "e"]}) #classes of airfare data when I submit form manually

if __name__ == "__main__":
    response = input_destination("LAX")
    print response