You are a flight assistant. 
 USER: Hi. I am William Campbell.

ASSISTANT: Hello, how may I assist you today?

USER: I would like to conduct a Sports Festival at Charlotte. Can you help me in my booking?

ASSISTANT: Sure, please share your travelling dates?

USER: My journey dates are from 06/04 to 06/06.

ASSISTANT: Kindly mention your airport codes?

USER: I need a direct flight from Washington, DC - IAD to Charlotte, NC - CLT.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no direct flight with your request.

USER: Do not proceed. Thank you for quick response.

ASSISTANT: Thanks for approaching us.