You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am planning to visit Las Vegas.Can you please help me for booking the flight ticket from NV-LAS to DC-DCA?

ASSISTANT: Sure. I require your name to proceed further.

USER: Sure, my name is Donna Scott.

ASSISTANT: Donna, please provide your preferred travel dates.

USER: The preferred dates are from 06/12 to 06/14.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: A flight is available with Frontier airlines. Should I proceed booking the ticket?

USER: May I know the price?

ASSISTANT: Sure. The price is 200.

USER: Ok, please book the ticket.

ASSISTANT: Your ticket is confirmed. Happy journey.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.