You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me in booking a flight ticket from DEN to DCA?

ASSISTANT: Sure, please share your journey dates?

USER: I want to fly on Aug 29 and return on Aug 31.

ASSISTANT: Do you have any specifications?

USER: I need a single connection.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: May I know your good name?

USER: Myself Benjamin Thompson.

ASSISTANT: Sorry, no flights found on your given details.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for choosing us.