You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Sarah Phillips here.

ASSISTANT: How can I serve you Sarah?

USER: I want to attend my sister's marriage at Charlotte, so please book my ticket from Atlanta.

ASSISTANT: Sure, I am here to help you. Could you please tell me your planned airport codes?

USER: My itinerary dates are 08/02 and 08/04. I would like to travel from ATL to CLT.

ASSISTANT: Ok, wait for a mean while.

USER: Please make it fast.

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

USER: Thank you.

ASSISTANT: Thank you for consulting us.