You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I render you today?

USER: I have planned to visit Las Vegas for site seeing with my cousin at NV - LAS, so please aid me in this.

ASSISTANT: Sure, we are gleeful to serve you. Where do you want to start from to reach Las Vegas?

USER: I would like to start from Atlanta, GA - ATL.

ASSISTANT: Can I know your price preference?

USER: I can pay up to 5000.

ASSISTANT: Could you please let me know your planned travelling dates?

USER: Sure, my travelling dates are 12/16 to 12/18.

ASSISTANT: Please mention if you need a connecting flight.

USER: Yes, I need it.

ASSISTANT: Thank you for giving your journey details, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, we found an UA airline matching your specifications with single connection and the flight number-1027.

USER: Ok, please reserve my ticket.

ASSISTANT: Your seat has been reserved and the fare of the ticket is 100.

USER: Thank you for your help.

ASSISTANT: Thank you for consulting us. May I know your name for documentation purpose?

USER: My name is David Wilson.

ASSISTANT: Thank you.