You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I be your helping hand today?

USER: Can you help me in booking from CLT to IAD, as there is a conference meeting to attend?

ASSISTANT: Sure, Can you please share your travel dates that you have planned?

USER: My trip dates are Mar 24-26.

ASSISTANT: Do you need any layover in between journey?

USER: I am looking for a stopover flight.

ASSISTANT: May I know your good name please?

USER: I am Emma Allen.

ASSISTANT: Is there any other specifications regarding your journey?

USER: I am prefer a business class.

ASSISTANT: Ok, please wait a moment. let me search a flight for you.

USER: Sure.

ASSISTANT: Thanks for waiting, there are no flights available at this moment matching your particulars.

USER: No issue, thank you.

ASSISTANT: Thanks for reaching us.