You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you aid me to book a flight ticket from DCA to ORD?

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: My trip dates are June 5 and June 7 respectively.

ASSISTANT: Do you have any preferences?

USER: I need a connecting flight.

ASSISTANT: May I know your good name?

USER: Steven Hall here.

ASSISTANT: We found a connecting flight 1007 from Delta airline with a fare 100.

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed in economy class.

USER: Thank you.

ASSISTANT: Thank you for opting us.