You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I am Deborah Allen want to visit Charlotte, can you book a ticket from ATL to CLT?

ASSISTANT: Sure, I am gleeful to help you out. Please provide me your trip dates.

USER: Sure, my travelling dates will be 06/16 and 06/18.

ASSISTANT: Sorry Deborah, there is no flight in your route with your desired travel dates.

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

ASSISTANT: Thank you for reaching us.