You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Please help me in booking flight ticket from EWR to DCA to attend Science Festival.

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

USER: My trip dates are Dec 30 to Jan 01.

ASSISTANT: May I know your connection limit?

USER: I prefer to travel in direct flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: May I know your good name?

USER: Jack Jones here.

ASSISTANT: Please wait for a moment.

USER: Ok.

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

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.