```ruby
# Create users with unique UID (string), name (string, full name, and
# image (string, URI for avatar image).
user_count = 25
user_count.times do
  User.create(
    uid:   SecureRandom.urlsafe_base64,
    name:  Faker::Name.name,
    email: 'mentor.me.dev@gmail.com',
    image: Faker::Avatar.image(nil, "100x100")
  )
end

# Cache user ids for use in further seeds
user_ids = User.ids

# Create timeslots at random times (normalized to the nearest half hour) up to
# one week from Time.now.  Approximately 50% of timeslots are randomly booked by
# another student.
timeslots_count = 25
timeslots_count.times do
  date = Faker::Date.forward(7)
  hour = rand(24)
  half_hour = rand(2) == 1 ? 0 : 30
  datetime = Time.local(date.year, date.month, date.day, hour, half_hour)
  tutor_id = user_ids.sample
  student_id = rand(2) == 1 ? (user_ids - [tutor_id]).sample : nil
  Timeslot.create(start: datetime, tutor_id: tutor_id, student_id: student_id)
end
```

Revise seed file user email
user
```ruby
# Create users with unique UID (string), name (string, full name, and
# image (string, URI for avatar image).
user_count = 25
user_count.times do
  User.create(
    uid:   SecureRandom.urlsafe_base64,
    name:  Faker::Name.name,
    email: 'mentor.me.dev@gmail.com',
    image: Faker::Avatar.image(nil, "100x100")
  )
end

# Cache user ids for use in further seeds
user_ids = User.ids

# Create timeslots at random times (normalized to the nearest half hour) up to
# one week from Time.now.  Approximately 50% of timeslots are randomly booked by
# another student.
timeslots_count = 25
timeslots_count.times do
  date = Faker::Date.forward(7)
  hour = rand(24)
  half_hour = rand(2) == 1 ? 0 : 30
  datetime = Time.local(date.year, date.month, date.day, hour, half_hour)
  tutor_id, student_id = user_ids.sample(2)
  student_id = nil if rand(2) == 1
  Timeslot.create(start: datetime, tutor_id: tutor_id, student_id: student_id)
end
```
assistant