You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Amy Nelson.

ASSISTANT: How can I assist you?

USER: I have to attend a Music Concert at Charlotte, could you please help me with booking a flight ticket?

ASSISTANT: Sure, may I know your airport codes please?

USER: My source airport code is IAD and destination airport code is CLT.

ASSISTANT: Please share your travel dates.

USER: I would like to take off on 09/25 and return on 09/27.

ASSISTANT: AA airlines is having a flight with travel charge of 100, shall I proceed for booking?

USER: Please proceed with the booking.

ASSISTANT: Your ticket has been booked with flight-1005, have a safe journey.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Thank you for choosing us.