You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you please book a ticket from DCA to IAD to attend Sports meet?

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

USER: My travelling dates are Sept 21 and Sept 23.

ASSISTANT: Is there any class preference for you?

USER: No.

ASSISTANT: Do you have any other specifications?

USER: I want a direct flight.

ASSISTANT: May I know your good name?

USER: I am Kimberly Davis.

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

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us.