You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Karen Nelson.

ASSISTANT: How can I serve you today?

USER: I want to book a flight ticket from DC-DCA to DC-IAD. Can you help me with this booking?

ASSISTANT: Sure, I will help you in booking. May I know when would you like to depart and arrive?

USER: Thank you. 08/13 and 08/15 are my travelling dates.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: We found a connecting flight with an airline JetBlue of flight 1004 and price is 200. Shall I book it for you?

USER: You can reserve it.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for choosing us.