You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Can you please aid me to book a flight ticket from DFW to IAD?

ASSISTANT: Sure, may I know your planned travel dates?

USER: Sure, my planned travel dates are June 25 and June 27 respectively.

ASSISTANT: May I know the connection limit for this journey?

USER: I am looking for a connecting flight that's it.

ASSISTANT: Please provide me the name.

USER: Myself Ronald Martinez.

ASSISTANT: Sorry, there are no flights are available for your desired intent.

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

ASSISTANT: Thank you for reaching us.