You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: I am Sharon Anderson.

ASSISTANT: Sharon, what service do you want for today?

USER: I like to book a flight ticket on 09/04. My return booking is on 09/06.

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

USER: My airport codes are DFW to DFW.

ASSISTANT: Sharon, please give me a moment, let me check with the available ticket for you.

USER: Sure.

ASSISTANT: Thank you for waiting. Sharon, happy to say you that there is an available flight for you from AA airline with flight number 1000. Are you ok with it?

USER: Yes, I am Interested in travelling in that flight.

ASSISTANT: Your ticket has booked, have a safe journey.

USER: Thank you for helping me in booking.

ASSISTANT: You are welcome. Thank you for contacting us.