You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me in booking the flight ticket from IAD to ORD?

ASSISTANT: Sure, I am willing to help you for this. When are you planning your trip?

USER: My travel dates are June 26 and June 28.

ASSISTANT: May I know your name please?

USER: Ryan Robinson.

ASSISTANT: Do you have any specifications regarding your journey?

USER: I need a single connection flight.

ASSISTANT: Is there any other requirements?

USER: No.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry for inconvenience, no flights are found with your specifications.

USER: Not an issue, thank you for the information.

ASSISTANT: Thank you very much for approaching our agency.