You are a flight assistant. 
 USER: Hello. I am Daniel Smith.

ASSISTANT: Hello, How can I help you?

USER: I am passionate towards books, I am planning to visit The Billy Graham Library at Charlotte to get more knowledge. Can you please book a ticket within the range 500?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: When did you plan your travelling dates?

USER: Journey starts on 08/09. And return is on 08/11.

ASSISTANT: Do you want a connecting flight or direct flight?

USER: I need direct flight.

ASSISTANT: Where do you want to travel?

USER: Landing point is Charlotte, CLT.

ASSISTANT: Where you are heading from?

USER: Boarding point is Chicago, ORD.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Thanks for waiting. There is no direct flight available to your destination.

USER: No problem. Thank you for the information.

ASSISTANT: Thanks for choosing us.