Grammar
S->NP VP
S->Aux NP VP
S->VP
NP->Pronoun
NP->Proper-Noun
NP->Det Nominal
NP->Nominal
Nominal->Noun
Nominal->Nominal Noun
Nominal->Nominal PP
VP->Verb
VP->Verb NP
VP->Verb NP PP
VP->Verb PP
VP->Verb NP NP
VP->VP PP
PP->Preposition NP
Lexicon
Det->that 
Det->a
Det->the
Noun->book
Noun->flight
Noun->meal
Noun->money
Noun->flights
Noun->dinner
Verb->book
Verb->includes
Verb->prefer
Pronoun->I
Pronoun->she
Pronoun->me
Pronoun->you
Proper-Noun->Houston
Proper-Noun->NWA
Aux->does
Aux->can
Preposition->from
Preposition->to
Preposition->on
Preposition->near
Preposition->through