You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you at this moment?

USER: I have planned to go for shopping to Washington, DC - DCA. Can you please help me for booking?

ASSISTANT: Sure, I will help you with that. Could you please mention your preferable travel dates for booking flight ticket?

USER: My scheduled dates are 06/24 and 06/26.

ASSISTANT: May I know your source airport code name?

USER: My source is Denver, CO - DEN.

ASSISTANT: Ok, please hold on a moment, I will check flight availability in this route.

USER: Ok.

ASSISTANT: UA airline is ready to serve you with 1 connection with a minimum fare of 300 is available for you. Shall I proceed with this?

USER: Ok, please proceed for booking on the name of Nicholas Taylor.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1015.

USER: Thank you.

ASSISTANT: You are welcome Nicholas Taylor.