0:         flight: BOS i want to fly from boston at 838 am and arrive in denver at 1110 in the morning EOS
                              BOS                                        O
                                i                                        O
                             want                                        O
                               to                                        O
                              fly                                        O
                             from                                        O
                           boston                      B-fromloc.city_name
                               at                                        O
                              838                       B-depart_time.time
                               am                       I-depart_time.time
                              and                                        O
                           arrive                                        O
                               in                                        O
                           denver                        B-toloc.city_name
                               at                                        O
                             1110                       B-arrive_time.time
                               in                                        O
                              the                                        O
                          morning              B-arrive_time.period_of_day
                              EOS                                        O