You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: My name is Matthew Thomas.

ASSISTANT: Thomas, how can I assist you?

USER: I have to attend a magic show in Charlotte, can you please help me to book my flight ticket with the price under 1000?

ASSISTANT: Sure, I can help you to book a flight ticket.

USER: Thank you.

ASSISTANT: May I know your itinerary dates?

USER: I will start my journey on 07/21 and return back on 07/23.

ASSISTANT: Please share your origin and destination airport codes.

USER: Sure, I want to travel from JFK to CLT.

ASSISTANT: Please wait for a while, let me check for available flights.

USER: Sure.

ASSISTANT: Flight 1002 of Spirit airlines is available for you.

USER: That's good, please book the ticket.

ASSISTANT: Your ticket is confirmed, have a safe and happy journey.

USER: Thank you so much for booking the ticket.

ASSISTANT: Thank you for reaching our agency.