You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: I am Nicholas Martin.

ASSISTANT: Ok.

USER: I need to attend business meeting at Washington, DC - DCA. Can you aid me in booking a flight ticket?

ASSISTANT: Sure, I will help you with that. Can you please provide your take off airport code?

USER: Denver, CO - DEN is my origin airport code.

ASSISTANT: Do you prefer any halt in between your journey?

USER: Yes, I prefer a halt.

ASSISTANT: May I know when you have planned to travel?

USER: 10/12 and 10/14 are my travelling dates.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Sure, I will wait.

ASSISTANT: Thanks for your precious time. We found Jet Blue airline fare of 200. Shall I proceed for booking with single stop over flight?

USER: Yes, please.

ASSISTANT: Your ticket has been confirmed with airline number 1002.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for choosing us. Have a safe journey!.