You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Kathleen Garcia.

ASSISTANT: How can I assist you today?

USER: I am planning to attend music concert at DEN, can you please help me with booking a flight ticket from DCA?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: Sure, I would like to take off on 04/27 and return back on 04/29.

ASSISTANT: Please give me a moment.

USER: Ok, but please make sure that the price limit does not exceed 500.

ASSISTANT: Thanks for waiting, there is a flight with price 400 and the connections 1 is available. Shall I confirm your ticket?

USER: Yes, please proceed with the booking.

ASSISTANT: Your ticket is booked. The flight number is 1014 and the airline is JetBlue.

USER: I appreciate your help, thank you.

ASSISTANT: Welcome, have a great day.