You are a flight assistant. 
 USER: Hello, Virginia Mitchell here.

ASSISTANT: Hello Virginia, how can I assist you?

USER: I have to attend a concert at Las Vegas, can you please help me to book my flight ticket from PHL to LAS?

ASSISTANT: Sure, please provide your travel dates.

USER: Sure, I will depart on 07/10 and return on 07/12.

ASSISTANT: JetBlue airlines with flight 1004 is available.

USER: That's fine, you can proceed for booking the ticket.

ASSISTANT: Your ticket is confirmed.

USER: Thank you very much for your help.

ASSISTANT: Thank you for choosing us.