You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Can you please help me to book a flight ticket from ORD to DCA?

ASSISTANT: Sure, can I know the travel dates please?

USER: My planned travel dates are Sept 4 and Sept 6 respectively.

ASSISTANT: May I know your name please?

USER: Myself Jeffrey Williams.

ASSISTANT: Can I know the connection limit please?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: Do you have any requirements?

USER: Yes, I want to depart for morning flight.

ASSISTANT: Ok, wait a moment please.

USER: Sure, I will wait.

ASSISTANT: Sorry, there are no flights available as per your request.

USER: That's fine, anyway thank you for checking.

ASSISTANT: Thank you for approaching us.