You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Stephanie Campbell from Los Angeles.

ASSISTANT: How may I help you?

USER: I would like to participate in an AIDS awareness program in Denver. Can you help me in booking a ticket from LAX to DEN?

ASSISTANT: Can I have your journey dates please?

USER: My planned journey dates are 12/01 and 12/03.

ASSISTANT: I found a flight for you in Spirit airlines with price 600. Shall I book your ticket?

USER: Please book the ticket.

ASSISTANT: Ok, your booking is confirmed with flight number 1000.

USER: Thank you for your service.

ASSISTANT: Thank you for approaching us. Have a nice day.