You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Alexander Lewis here.

ASSISTANT: Lewis, how may I help you?

USER: Can you book a connecting flight to Charlotte?

ASSISTANT: Sure, please provide your itinerary dates.

USER: My travelling dates will be 10/06 to 10/08.

ASSISTANT: May I know your airport codes?

USER: My airport codes for boarding the flight are ATL to CLT.

ASSISTANT: Please hold on for a moment.

USER: Ok.

ASSISTANT: Sorry, no flight is available on your route.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for choosing us.