user: I just rewatched "Pulp Fiction," and I'm curious about the mastermind behind its direction. Could you find out who directed this iconic movie for me?

Available functions:
name: get_movie_director
description: Fetches the director of a movie from the OMDB API.
parameters: type: dict
properties: movie_name: type: string
description: The name of the movie.
required: movie_name
name: calculate_interest_rate
description: Calculates the interest rate for a given principal, rate, and time.
parameters: type: dict
properties: principal: type: float
description: The initial amount of money.
rate: type: float
description: The interest rate per period.
time: type: float
description: The time the money is invested or borrowed for.
required: principal
rate
time
name: convert_temperature
description: Converts temperature from Celsius to Fahrenheit or vice versa.
parameters: type: dict
properties: temperature: type: float
description: The temperature to convert.
unit_from: type: string
description: The current unit of the temperature (Celsius or Fahrenheit).
unit_to: type: string
description: The unit to convert the temperature to (Celsius or Fahrenheit).
required: temperature
unit_from
unit_to
name: generate_random_number
description: Generates a random number within a specified range.
parameters: type: dict
properties: min: type: integer
description: The minimum value of the range.
max: type: integer
description: The maximum value of the range.
required: min
max

Ground truth function call(s):
get_movie_director(movie_name='Pulp Fiction')