You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am Margaret Lewis, can you help me to book a flight from IAD to ATL?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My travelling dates are Mar 02 and 04.

ASSISTANT: Please share me your connection limit.

USER: I need a connecting flight.

ASSISTANT: Is there any class preference for you?

USER: No, please book a afternoon flight from IAD.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: No issues, thank you for your time.

ASSISTANT: Thank you for reaching us.