You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I would like to visit Charlotte, please book a ticket from LAS to CLT.

ASSISTANT: Sure, could you please share your travelling dates?

USER: My trip dates are 12/16 and 12/18.

ASSISTANT: Let me know your name?

USER: My name is James Green.

ASSISTANT: There is a flight-1000 of Southwest airlines, shall I proceed with booking?

USER: Ok, please book my ticket.

ASSISTANT: Ok, your reservation process is completed.

USER: Thank you for your help.

ASSISTANT: Welcome.