You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: David Thompson here. I am planning to travel from DCA to CLT. Could you please help me to book a ticket?

ASSISTANT: Sure, please share your travelling dates.

USER: My travelling dates will be on 08/16 to 08/18.

ASSISTANT: Ok, may I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: Thanks for your time, there were no flights found based on your request.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for availing us.