You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Jason Johnson, I want to travel DCA to attend a client meeting over there. Can you please help me to book a flight ticket from HOU?

ASSISTANT: Sure, I will help you. Please provide your travel dates?

USER: My travel dates are 09/06 and 09/08.

ASSISTANT: Please wait a while, I will check and inform you.

USER: Ok, sure take your time.

ASSISTANT: There is no flight available on your desired travel dates.

USER: Not an issue, thank you for the information.

ASSISTANT: You are welcome.