You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what sort of help are you seeking from us?

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

ASSISTANT: Sure, please share me your trip dates.

USER: My trip dates are Mar 9 and Mar 11 respectively.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I prefer for connecting flight.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: Rebecca Roberts here.

ASSISTANT:  Would you let us know if you have any other preferences?

USER: No other preferences.

ASSISTANT: There is a connecting flight 1007 in American Airlines at the price of 200 with economy class. Can I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for connecting with us.