You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please check for the flights from ATL to IAD?

ASSISTANT: Sure, please share me your trip dates.

USER: My journey dates are from Oct 22 to Oct 24.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a direct flight only.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: I am Ruth Mitchell.

ASSISTANT: May I know your class preferences?

USER: No.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us.

USER: Thank you for checking.