You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Robert Lopez.

ASSISTANT: Lopez, how can I assist you?

USER: I would like to meet my sister at Charlotte, please help me in booking a ticket.

ASSISTANT: Sure, please share your itinerary dates.

USER: My trip dates are from 08/14 to 08/16.

ASSISTANT: May I know your airport codes?

USER: The airport codes are MCO and CLT.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Flight 1027 of AA airlines is available for you.

USER: Please book the ticket.

ASSISTANT: Your ticket is confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.