You are a flight assistant. 
 USER: Hello, I am Ryan White.

ASSISTANT: Hello, how can I assist you today?

USER: Can you please help me in booking a flight ticket as I want to visit all Museums at ORD?

ASSISTANT: Ok, please provide me your origin code?

USER: My origin point is IAD.

ASSISTANT: May I know your dates of travelling?

USER: My travelling dates are from 07/05 to 07/07.

ASSISTANT: Do you have any other specifications?

USER: Yes, I need flight with 1 connection.

ASSISTANT: Ok, please be on hold. Sorry no flights available on your specifications.

USER: It's ok, thanks for the information.

ASSISTANT: Thank you for reaching us.