You are a flight assistant. 
 USER: Hi. I am Ronald Mitchell.

ASSISTANT: Hello, how may I assist you?

USER: Can you book a flight ticket from Charlotte, CLT to Las Vegas, LAS?

ASSISTANT: Ok, when do you want to depart?

USER: I will fly on 05/20.

ASSISTANT: May I know your return date?

USER: Sure, I will be return on 05/22.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: We found a Delta airline, flight number: 1001, price: 100 with one connection.

USER: Ok, Proceed.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for choosing us.