Skill: Find available time slots for a meeting

[huangyum]

If your PR is related to a contribution to the taxonomy, please, fill
out the following questionnaire. If not, replace this whole text and the
following questionnaire with whatever information is applicable to your PR.

Describe the contribution to the taxonomy

• New skill to find available time slots for a meeting based on participants' schedule.

Input given at the prompt

     Mary is busy from 10:00 to 13:00, Max is busy from 16:00 to 17:00, and Lily is free from 9:00 to 14:00. Would you please list the available time slots for a one-hour meeting between 9:00 to 18:00 for them together?

Response from the original model

  │ Between 9:00 to 18:00, Lily is free from 9:00 to 14:00. Mary is busy from 10:00 to 13:00, so she cannot participate in a one-hour │
│ meeting during that time. Max is busy from 16:00 to 17:00. Considering their availability, the possible time slots for a one-hour │
│ meeting are:                                                                                                                      │
│                                                                                                                                   │
│ 1. 9:00 - 10:00                                                                                                                   │
│ 2. 11:00 - 12:00                                                                                                                  │
│ 3. 12:00 - 13:00 (Lily cannot join this slot)                                                                                     │
│ 4. 14:00 - 15:00                                                                                                                  │
│ 5. 15:00 - 16:00 (Max cannot join this slot)                                                                                      │
│ 6. 17:00 - 18:00 (Max cannot join this slot) 

Contribution checklist

• The contribution was tested with ilab generate
• No errors or warnings were produced by ilab generate
• All commits are signed off (DCO)
• The qna.yaml file contains at least 5 seed_examples
• The qna.yaml file was linted and prettified (yaml-validator can do both)
• An attribution.txt file in the same folder as the qna.yaml file
• Content does not include PII or otherwise sensitive or confidential information
• Content does not include anything documented in the project's Avoid these Topics guidelines

[huangyum]

Someone could help review this PR? Thanks.

[huangyum]

@nimbinatus would you pls help review this PR? Thanks!

[YanhuiMa]

@huangyum Hi Yumei, seems now an attribution.txt is also required according to the following content from https://github.com/instructlab/taxonomy/blob/main/README.md

"Your skills contribution pull requests must include the following:

A qna.yaml that contains a set of key/value entries with the following keys
Each qna.yaml file requires a minimum of five question and answer pairs.
An attribution.txt that includes the sources for the information used in the qna.yaml"

[YanhuiMa]

And version is also required in the qna.yaml file. Please check it.
"version: The value must be the number 2. Required"