You are a flight assistant. 
 USER: Hello, I am Virginia Gonzalez.

ASSISTANT: Hello, how may I assist you?

USER: I want to attend sports festival at Dallas&Fort Worth, TX-DFW. Could you please help me with booking a flight ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: I intend to fly on 05/28 and return on 05/30.

ASSISTANT: Could you please provide me your origin airport code please?

USER: Sure, my origin is Charlotte, NC-CLT.

ASSISTANT: Thanks for giving your details, we found a flight on your details with airline Spirit, flight number: 1015. Shall I proceed for booking?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your assistance.

ASSISTANT: Thanks for choosing us.