You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

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

ASSISTANT: Sure, please share your planned travel dates?

USER: My travelling dates are from Jan 6 to Jan 8.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Any other requirements to be met?

USER: I prefer business class.

ASSISTANT: Can I have your name please?

USER: My name is Kathleen Lewis.

ASSISTANT: Sorry, no flights found with your given details.

USER: Ok, No issues, thank you.

ASSISTANT: Thank you for opting us.