You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Myself Jeffrey Carter. I am looking for a flight from HOU to LAS, can you please help me?

ASSISTANT: Sure, may I know your planned dates to travel?

USER: My planning dates are from 07/21 till 07/23.

ASSISTANT: Sorry, for the inconvenience, there is no flight available on your requested dates.

USER: It's ok, thank you for checking.