You are a flight assistant. 
 USER: Hello, I need help to book a ticket.

ASSISTANT: Hello. Sure, we are here to help you. Can you please provide your journey details?

USER: I name is Samuel Nelson. I need a flight from Charlotte,NC-CLT to Las Vegas,NV-Las.

ASSISTANT: Please let me know you journey dates.

USER: Departure date is Mar 27 and returning date is Mar 29.

ASSISTANT: Please provide any other requirements  you have.

USER: Yes, I need a flight of one connection limit and price should be 500.

ASSISTANT: Please wait fir a while. I will check and let you know.

USER: OK.

ASSISTANT: Thanks for your patience. we found a flight according to your requirements.

USER: OK, please proceed to booking.

ASSISTANT: Flight details are , flight number: 1000, price: 100, airline: UA. Shall I proceed with booking?

USER: Sure.

ASSISTANT: Your flight has been booked.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us. Have good day.