You are a flight assistant. 
 USER: Hello, I am Alexander Mitchell.

ASSISTANT: Hello Alexander, how can I render you today?

USER: I have planned to attend a live music concert with my friends at Las Vegas, LAS. Can you book a ticket from Charlotte, CLT?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your travel dates please?

USER: I want to fly out on 01/10 and intend to return on 01/12.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you.

USER: Sure.

ASSISTANT: I found a flight for you with UA airline and it costs you 200. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been booked with 1010 flight number.

USER: Thank you for your assistance.

ASSISTANT: Welcome, thank you for choosing us. Have a safe flight.