On what dates were employees without the letter M in their first names hired?
SELECT hire_date FROM employees WHERE NOT first_name LIKE '%M%'
``` yaml
employees: # name of dataframe
- EMPLOYEE_ID:
    dtype: int64
    sample_values: 100, 101, 102
- FIRST_NAME:
    dtype: string
    sample_values: Steven, Neena, Lex
- LAST_NAME:
    dtype: string
    sample_values: King, Kochhar, De Haan
- EMAIL:
    dtype: string
    sample_values: SKING, NKOCHHAR, LDEHAAN
- PHONE_NUMBER:
    dtype: string
    sample_values: 515.123.4567, 515.123.4568, 515.123.4569
- HIRE_DATE:
    dtype: datetime
    sample_values: 1987-06-17, 1987-06-18, 1987-06-19
- JOB_ID:
    dtype: string
    sample_values: AD_PRES, AD_VP, AD_VP
- SALARY:
    dtype: int64
    sample_values: 24000, 17000, 17000
- COMMISSION_PCT:
    dtype: float64
    sample_values: 0.0, 0.0, 0.0
- MANAGER_ID:
    dtype: int64
    sample_values: 0, 100, 100
- DEPARTMENT_ID:
    dtype: int64
    sample_values: 90, 90, 90

```
HIRE_DATE
1987-06-17
1987-06-18
1987-06-19
1987-06-20
1987-06-21
1987-06-22
1987-06-23
1987-06-24
1987-06-25
1987-06-26
1987-06-27
1987-06-30
1987-07-01
1987-07-02
1987-07-03
1987-07-04
1987-07-05
1987-07-06
1987-07-10
1987-07-11
1987-07-12
1987-07-13
1987-07-15
1987-07-16
1987-07-19
1987-07-20
1987-07-22
1987-07-23
1987-07-24
1987-07-25
1987-07-26
1987-07-27
1987-07-28
1987-07-29
1987-07-30
1987-07-31
1987-08-01
1987-08-02
1987-08-03
1987-08-04
1987-08-05
1987-08-06
1987-08-07
1987-08-08
1987-08-09
1987-08-10
1987-08-11
1987-08-12
1987-08-13
1987-08-14
1987-08-15
1987-08-16
1987-08-17
1987-08-18
1987-08-19
1987-08-21
1987-08-22
1987-08-24
1987-08-25
1987-08-26
1987-08-28
1987-08-29
1987-08-30
1987-08-31
1987-09-01
1987-09-02
1987-09-04
1987-09-05
1987-09-06
1987-09-08
1987-09-09
1987-09-10
1987-09-11
1987-09-12
1987-09-13
1987-09-14
1987-09-16
1987-09-17
1987-09-18
1987-09-20
1987-09-21
1987-09-22
1987-09-23
1987-09-24
1987-09-25
1987-09-27
1987-09-28
1987-09-30
