You are a flight assistant. 
 USER: Hi, my name is Rebecca Perez.

ASSISTANT: Hello, how may I help you today?

USER: I want to meet my mother in Charlotte, can you please help me to book my flight ticket from DEN to CLT?

ASSISTANT: Sure, may I have your journey dates?

USER: Sure, I will start my journey on 01/13 and return back on 01/15.

ASSISTANT: There is a flight from Spirit airlines with travel charge of 200, shall I proceed booking?

USER: That's good, you can book the ticket for me.

ASSISTANT: Your ticket has been booked with flight-1000, have a safe journey.

USER: Thank you very much for booking the ticket.

ASSISTANT: Thank you for reaching us.