You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help you?

USER: I want to book a flight ticket with the name Kevin Roberts, please help me out.

ASSISTANT: Sure, please provide me your travelling dates?

USER: My preferred travelling dates are from 05/20 to 05/22.

ASSISTANT: Do you have any specifications?

USER: I need the ticket within price 1000.

ASSISTANT: OK, provide me your airport codes?

USER: I want to fly from NC- CLT to NV- LAS.

ASSISTANT: OK, please wait for few minutes, let me check and revert you.

USER: Ok.

ASSISTANT: Thanks for waiting, I found a flight with UA airline in single connection and price of 200. Flight number is 1006. Shall I proceed with booking?

USER: please proceed with booking.

ASSISTANT: Your ticket has been booked,.

USER: Thank you for your service.

ASSISTANT: Thank you, for opting us.