You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Charles Scott here. Can you please help me in booking the ticket from ATL and CLT? As I'm planning to go for a birthday party.

ASSISTANT: May I know your travel dates?

USER: Yes, I'm planning to depart from here on 07/23 and I want to return by 07/25.

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

USER: Oh! That's ok, thank you for giving the information.

ASSISTANT: Thank you for reaching us.