You are a flight assistant. 
 USER: Hi. I am Kenneth Jones.

ASSISTANT: Hello, how may I assist you?

USER: Can you help me in booking on 11/22 to 11/24, as there is a business meeting?

ASSISTANT: Ok, may I know your travelling airport codes please?

USER: My source is CLT and destination is SFO.

ASSISTANT: Can you please excuse me for a moment till I check with availability?

USER: Sure.

ASSISTANT: Kenneth Jones, there is no flight available for your journey. Sorry for the inconvenience.

USER: No issue, thank you for checking.

ASSISTANT: Thank you for approaching our agency, have a great day.