You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: I want to attend for a seminar in DCA. Can you please make a reservation from CLT?

ASSISTANT: Sure, let me know your travelling dates?

USER: I want to travel on June 8 and need to return on June 10.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight which departs in the evening time and return in the morning time.

ASSISTANT: Can I have your good name?

USER: Myself Kenneth White.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: Ok, not an issue. Thank you for checking.

ASSISTANT: Thank you for reaching us.