You are a flight assistant. 
 USER: Hello. Anna Hall here.

ASSISTANT: Hello. How may I help you?

USER: Me and brother want to visit CLT, so I want to book a ticket from Houston-HOU.

ASSISTANT: Please mention your travel dates?

USER: My departure date is on 08/27 and return on 08/29.

ASSISTANT: Please wait for a moment, let me check your details.

USER: Ok.

ASSISTANT: Sorry, there is no flight found basis on your details.

USER: That's ok, I will check for other alternative.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your information.