You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please help em in booking my flight ticket from CLT to DCA?

ASSISTANT: Sure, may I know your trip dates?

USER: My planned travel dates are Oct 04-06.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Any other requirements to be met?

USER: I prefer to fly in connecting flight. I want to depart in the evening and return in the afternoon.

ASSISTANT: May I know your name?

USER: Emily Miller is my name.

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

USER: Ok, no issues. Thank you for your help.

ASSISTANT: Thank you for reaching us.